Which of the following statements concerning the periodic table is incorrect?
A) The elements in a given group or family have similar chemical properties.
B) The chemical characteristics of the elements are periodic functions of their atomic numbers.
C) All the elements are arranged in order of increasing atomic weight.
D) Mendeleev left spaces in his periodic table for undiscovered elements.
E) Mendeleev received most of the credit for the early development of the periodic table.
Correct Answer:
Verified
Q36: If the electron could have a third
Q37: What is the ground-state electron configuration of
Q38: Which of the following may represent an
Q39: Which ground-state electron configuration is incorrect?
A)Br:[Ar]3d104s24p5
B)K:[Ar]4s1
C)Fe:[Ar]3d5
D)Na:1s22s22p63s1
E)Zn:[Ar]3d104s2
Q40: Which of the following sets of four
Q42: The statement that "the lowest-energy configuration for
Q43: Who was the first chemist to recognize
Q44: In general,atomic radii
A)decrease from left to right
Q45: How many unpaired electrons are found in
Q46: The element whose atoms in the ground
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