Answers26-27 WHS-Chemistry-1stSixWeeksAtomic Numbers and Electron Configurations

Ionic Bonding Answers

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Among the elements of the main group, the general trend in the first ionization energy moving across a period is not followed between group 2 and group 13. Which best explains these exceptions?

A
The ionization energy decreases because the full s orbital shields the electron entering the p orbital.
B
The ionization energy increases because the full s orbital shields the electron entering the p orbital.
C
The ionization energy decreases because the stability of the half-full p subshell is increased.
D
The ionization energy increases because the stability of the half-full p subshell is increased.
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The elements of which group are nonreactive?

A
halogens
B
alkaline earth metals
C
noble gases
D
alkali metals
23

Which is a correct set of values of m for one of the subshells of n = 2?

A
–1, 0, 1
B
–1, –2, 0, 1, 2
C
–1, –2, –3, 0, 1, 2, 3
D
–1, –2, –3, –4, 0, 1, 2, 3, 4
24

To show the electron configuration for an atom, when would it be better to use an orbital notation than to use a written configuration with numbers, letters, and superscripts?

A
when the aim is to use less space
B
when the aim is to show electron spins
C
when the aim is to show orbital shapes in subshells
D
when the aim is to show electron distributions in shells
25

An atom contains one proton, one electron, and one neutron. Which two particles are most similar in mass?

A
the neutron and the electron
B
the proton and the electron
C
the proton and the neutron
D
the neutron and the atom

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Ionic Bonding Answers — 26-27…