Which statement is not part of the modern description of the electronic structure of an atom?
A) Electrons occupy discrete energy levels.
B) Electrons move freely in space.
C) The energy of electrons is quantized.
D) The energy of electrons is restricted to specific values.
Correct Answer:
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Q5: Which atom has the smallest atomic radius?
A)K
B)Ga
C)Br
D)Rb
Q6: Which element is not an alkali metal?
A)Li
B)K
C)Rb
D)H
E)All
Q7: Which element is a metalloid?
A)B
B)C
C)Ar
D)Al
Q8: Which element is a metal?
A)Li
B)Si
C)Cl
D)Ar
E)More than one
Q9: What is the mass number of the
Q11: How many protons are in the isotope
Q12: Which element is not an alkali metal?
A)Li
B)Kr
C)Rb
D)Na
E)All
Q13: The element symbol for manganese is _.
A)M
B)Ma
C)Mg
D)Mn
Q14: The element symbol for sulfur is _.
A)S
B)Su
C)Sf
D)Sl
Q15: Which element is a noble gas?
A)H
B)Ne
C)Pr
D)Ra
E)More than
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