Deck 4: Atoms

Question 1

silver

A)S
B)Si
C)Ag
D)Au
E)AG

Answer 1

Ag

Question 2

sodium

A)So
B)Na
C)No
D)Sm
E)Au

Answer 2

Na

Question 3

Which of the following is a characteristic of nonmetals?

A)shiny
B)malleable
C)good conductors of heat
D)low melting points
E)good conductors of electricity

Answer 3

low melting points

Question 4

The Group 8A(18) elements

A)are unreactive and are rarely found in combination with other elements.
B)are good conductors of electricity.
C)melt at high temperatures.
D)are liquids at room temperature.
E)react vigorously with water.

Question 5

Identify the noble gas in the following list.

A)helium
B)nitrogen
C)oxygen
D)gold
E)chlorine

Question 6

What elements are in hydroxyapatite, Ca₅ (PO₄)₃OH, a major compound in human bones and teeth?

A)carbon, potassium, oxygen, hydrogen
B)calcium, phosphorus, oxygen, hydrogen
C)carbon, phosphorus, oxygen, helium
D)calcium, phosphorus, oxygen, helium
E)carbon, potassium, oxygen, helium

Question 7

Which of the following elements is a nonmetal?

A)nitrogen
B)sodium
C)iron
D)silver
E)calcium

Question 8

potassium

A)P
B)Po
C)Pt
D)K
E)Ko

Question 9

Ca is the symbol for

A)calcium.
B)carbon.
C)cobalt.
D)copper.
E)cadmium.

Question 10

Which of the following elements is a noble gas?

A)oxygen
B)chlorine
C)bromine
D)argon
E)nitrogen

Question 11

Which of the following properties is NOT a characteristic of the Group 1A(1) elements (alkali metals)?

A)They are shiny.
B)They are good conductors of heat.
C)They react vigorously with water.
D)Most of them are liquids at room temperature.
E)They are good conductors of electricity.

Question 12

The primary substances of which all other things are composed are

A)molecules.
B)compounds.
C)elements.
D)electrons.
E)protons.

Question 13

What is the symbol of the element in Period 4 and Group 2?

A)Be
B)Mg
C)Ca
D)C
E)Si

Question 14

What is the symbol of the element in Group 4A(14) and Period 2?

A)Be
B)Mg
C)Ca
D)C
E)Si

Question 15

Which of the following is a characteristic of the modern periodic table?

A)A group is a horizontal row on the periodic table.
B)A period is a column on the periodic table.
C)The elements in each group have similar chemical properties.
D)The B groups contain the representative elements.
E)The A groups contain the transition elements.

Question 16

Au is the symbol for

A)gold.
B)silver.
C)argon.
D)aluminum.
E)sodium.

Question 17

Which of the following elements is a metal?

A)nitrogen
B)fluorine
C)argon
D)strontium
E)phosphorus

Question 18

aluminum

A)Al
B)Am
C)Au
D)Sn
E)Ag

Question 19

Which element would have physical and chemical properties similar to chlorine?

A)Ar
B)Br
C)S
D)O
E)P

Question 20

iron

A)Ir
B)Fs
C)Fe
D)In
E)FE

Question 21

How many protons are in an isotope of sodium with a mass number of 25?

A)11
B)14
C)15
D)25
E)32

Question 22

Consider an isotope of sodium with a mass number of 25. The number of neutrons in this isotope of sodium is

A)11.
B)14.
C)16.
D)25.
E)32.

Question 23

Which of the following gives the correct numbers of protons, neutrons, and electrons in a neutral atom of Sn?

A)118 protons, 50 neutrons, 118 electrons
B)118 protons, 118 neutrons, 50 electrons
C)50 protons, 68 neutrons, 50 electrons
D)68 protons, 68 neutrons, 50 electrons
E)50 protons, 50 neutrons, 50 electrons

Question 24

Which of the following descriptions of a subatomic particle is correct?

A)A proton has a positive charge and a mass of approximately 1 amu.
B)An electron has a negative charge and a mass of approximately 1 amu.
C)A neutron has no charge and its mass is negligible.
D)A proton has a positive charge and a negligible mass.
E)A neutron has a positive charge and a mass of approximately 1 amu.

Question 25

Semiconductors are located in the periodic table on (or in) the

A)left side of the table.
B)right side of the table.
C)line dividing metals from nonmetals in the table.
D)first period of the table.
E)last period of the table.

Question 26

The correct symbol for the isotope of potassium with 22 neutrons is

A)
K.
B)
K.
C)
P.
D)
P.
E)
K.

Question 27

The element in this list with chemical properties similar to magnesium is

A)sodium.
B)boron.
C)carbon.
D)strontium.
E)chlorine.

Question 28

Consider a neutral atom with 30 protons and 34 neutrons. The number of electrons in this atom is

A)30.
B)32.
C)34.
D)64.
E)94.

Question 29

Given the following: X, X, X, and X. Which are isotopes of each other?

A)X and X are isotopes of each other; and XandX are isotopes of each other.
B)X and X are isotopes of each other.
C)X,X,X,andX are isotopes of each other.
D)None are isotopes of each other.

Question 30

Isotopes are atoms of the same element that have

A)different atomic numbers.
B)the same atomic numbers but different numbers of protons.
C)the same atomic numbers but different numbers of electrons.
D)the same atomic number but different numbers of neutrons.
E)the same atomic mass but different numbers of protons.

Question 31

The number of neutrons in an atom is equal to

A)the atomic number.
B)the mass number.
C)the mass number + the atomic number.
D)the mass number - the atomic number.
E)the number of protons.

Question 32

The mass number of an atom can be calculated from

A)the number of electrons.
B)the number of protons plus neutrons.
C)the number of protons.
D)the number of electrons plus protons.
E)the number of neutrons.

Question 33

Consider a neutral atom with 30 protons and 34 neutrons. The atomic number of the element is

A)30.
B)32.
C)34.
D)64.
E)94.

Question 34

Identify the metalloid in the following list.

A)sulfur
B)fluorine
C)silver
D)copper
E)germanium

Question 35

Consider a neutral atom with 30 protons and 34 neutrons. The mass number for this atom is

A)30.
B)32.
C)34.
D)64.
E)94.

Question 36

The atomic number of an atom is equal to the number of

A)nuclei.
B)neutrons.
C)neutrons plus protons.
D)electrons plus protons.
E)protons.

Question 37

What is the mass number of an atom of potassium that has 20 neutrons?

A)15
B)19
C)35
D)39
E)59

Question 38

In an atom, the nucleus contains

A)an equal number of protons and electrons.
B)all the protons and neutrons.
C)all the protons and electrons.
D)only neutrons.
E)only protons.

Question 39

According to the Atomic Theory,

A)all atoms are different.
B)atoms are neither created nor destroyed during a chemical reaction.
C)atoms of the same element combine to form compounds.
D)all matter is made up of tiny particles called electrons.
E)a compound can contain different numbers of atoms as long as it has the same kinds of atoms.

Question 40

The smallest particle of an element that retains the characteristics of the element is a(n)

A)electron.
B)neutron.
C)proton.
D)atom.
E)nucleus.

Question 41

What is the electron configuration for aluminum?

A)1s²2s²2p⁶3s²3p¹
B)1s²2s²2p⁶3s²3p³
C)1s²2s²2p63s²3p⁵
D)1s²2s²2p⁶3s²3p⁶
E)1s²2s²2p⁶3s²3p⁸

Question 42

What is the element with the abbreviated electron configuration [Kr]5s²4d⁸?

A)Ni
B)Pd
C)Pt
D)Kr
E)Xe

Question 43

The maximum number of electrons that may occupy the third energy level is

A)2.
B)8.
C)10.
D)18.
E)32.

Question 44

Which of the following is NOT true for the atoms 13N, 14N, and 15N?

A)They all have the same mass number.
B)They are isotopes.
C)They all have the same atomic number.
D)They all have 7 protons.
E)They all have 7 electrons.

Question 45

The atomic mass of an element is equal to

A)its mass number.
B)its atomic number.
C)one-twelfth of the mass of a carbon-12 atom.
D)a weighted average mass of all of the naturally occurring isotopes of the element.
E)the average mass of all of the naturally occurring isotopes of the element.

Question 46

What is the element with the electron configuration 1s²2s²2p⁶3s²3p⁵?

A)Be
B)Cl
C)F
D)S
E)Ar

Question 47

A sample of silicon has three naturally occurring isotopes: Si-28 (mass 28.0 amu); Si-29 (mass 29.0 amu) and Si-30 (mass = 30.0 amu). If the average atomic mass of silicon is 28.1 amu, which isotope is the most abundant?

A)Si-28
B)Si-29
C)Si-30
D)All isotopes have the same natural abundance.

Question 48

What is the correct electron configuration for the lithium atom?

A)1s³
B)2s¹
C)1s¹2s²
D)1s²2s¹
E)1s²2s⁵

Question 49

The elements sodium, magnesium, and silicon

A)are isotopes of each other.
B)are in the same period of elements.
C)have the same number of neutrons.
D)are in the same group.
E)have the same mass number.

Question 50

The elements lithium, sodium, and potassium

A)are isotopes of each other.
B)are in the same period of elements.
C)have the same number of neutrons.
D)are in the same group.
E)have the same mass number.

Question 51

The electron arrangement of any particular atom shows

A)the number of isotopes possible.
B)a description of the shape of each energy level.
C)the number of electrons in each energy level.
D)a diagram of an atomic nucleus.
E)the maximum number of electrons each energy level can hold.

Question 52

What element has the electron configuration 1s²2s²2p⁶3s²3p²?

A)carbon
B)oxygen
C)sulfur
D)iron
E)silicon

Question 53

Valence electrons are electrons located

A)in the outermost energy level of an atom.
B)in the nucleus of an atom.
C)in the innermost energy level of an atom.
D)throughout the atom.
E) in the first three shells of an atom.

Question 54

The number of electron levels in a magnesium atom is

A)1.
B)2.
C)3.
D)4.
E)5.

Question 55

What is the electron configuration for potassium (atomic number 19)?

A)1s22s22p63s23p7
B)1s22s22p6 3s23p53d2
C)1s22s22p83s23p5
D)1s22s22p63s23p64s1
E)1s22s22p63s23p54s1

Question 56

A sample of chlorine has two naturally occurring isotopes. The isotope Cl-35 (mass 35.0 amu) makes up 75.8% of the sample, and the isotope Cl-37 (mass = 37.0 amu) makes up 24.3% of the sample. What is the average atomic mass for chlorine?

A)36.0 amu
B)35 amu
C)36.6 amu
D)35.5 amu
E)35.521 amu

Question 57

The number of valence electrons found in an atom of a Group A element is equal to

A)its atomic number.
B)its mass number.
C)its group number.
D)eight.
E)eight minus the group number.

Question 58

Which of the following electron configurations is impossible?

A)1s²2s²2p⁶3s²3p¹
B)1s²2s⁴2p⁶3s²3p³
C)1s²2s²2p⁶3s²3p⁵
D)1s²2s²2p⁶3s²3p⁶
E)1s²2s²2p⁶3s²3p³

Question 59

The number of electrons in the outer energy level of a neutral atom of boron (atomic number 5) is

A)2.
B)3.
C)5.
D)8.
E)10.

Question 60

What is the abbreviated electron configuration for nickel (atomic number 28)?

A)[He]2s²2p³
B)[Ar]4s²3d⁸
C)[Kr]4s²3d⁸
D)[Ar]4s²4p⁴
E)[Ar]3d⁸

Question 61

Of the elements: B, C, F, Li, and Na. The element with the smallest ionization energy is

A)B.
B)C.
C)F.
D)Li.
E)Na.

Question 62

Ionization energy is

A)the energy an ion acquires from an electron.
B)the energy needed to remove the least tightly bound electron.
C)highest for metals in Group 1A (1).
D)higher for potassium than for lithium.
E)None of the above.

Question 63

Write in the electronic configuration for the atom shown.
Magnesium

Question 64

How many valence electrons are in the electron-dot structures for the elements in group 3A(13)?

A)1
B)2
C)3
D)4
E)6

Question 65

The atomic size of atoms

A)increases going across a period.
B)decreases going across a period.
C)decreases going down within a group.
D)does not change going across a period.
E)None of the above.

Question 66

Write in the electronic configuration for the atom shown.
Sulfur

Question 67

Which of the following is the correct electron-dot structure for carbon?

A)
B)
C)
D)
E)

Question 68

Write in the electronic configuration for the atom shown.
Chlorine

Question 69

Of the elements: B, C, F, Li, and Na. The element with the most metallic character is

A)B.
B)C.
C)F.
D)Li.
E)Na.

Question 70

Write in the electronic configuration for the atom shown.
Sodium

Question 71

The number of dots in the electron dot structure of nitrogen is

A)one.
B)two.
C)three.
D)four.
E)five.

Question 72

In an electron-dot structure of an element, the dots are used to represent

A)all of the electrons in the atom.
B)the valence electrons.
C)the electron arrangement.
D)only the electrons that will participate in bond formation.
E)the electrons that the element will gain when it forms a compound.

Question 73

The number of dots in the electron dot structure of carbon is

A)one.
B)two.
C)three.
D)four.
E)five.

Question 74

Write in the electronic configuration for the atom shown.
Phosphorus

Question 75

Of the elements: B, C, F, Li, and Na, the element with the smallest atomic radius is

A)B.
B)C.
C)F.
D)Li.
E)Na.

Question 76

Of the elements: B, C, F, Li, and Na., the element with the largest atomic radius is

A)B.
B)C.
C)F.
D)Li.
E)Na.

Question 77

Write in the electronic configuration for the atom shown.
Argon

Question 78

The ionization energy of atoms

A)decreases going across a period.
B)decreases going down within a group.
C)increases going down within a group.
D)does not change going down within a group.
E)None of the above.

Question 79

Of the elements: B, C, F, Li, and Na. The element with the least metallic character is

A)B.
B)C.
C)F.
D)Li.
E)Na.

Question 80

Of the elements: B, C, F, Li, and Na. The element with the highest ionization energy is

A)B.
B)C.
C)F.
D)Li.
E)Na.