Chemistry Practice Questions II with Answers

1) Choose the orbital diagram that represents the ground state of N.

2) The element that corresponds to the electron configuration 1s22s22p63s23p64s13d5 is

  • A) titanium.
  • B) vanadium.
  • C) chromium.
  • D) manganese.
  • E) iron.

3) Identify the element that has a ground state electronic configuration of [Kr]5s24d5.

  • A) Tc
  • B) Mn
  • C) Nb
  • D) Ru

4) Give the complete electronic configuration for oxygen.

  • A) 1s22s22py22pz2
  • B) 1s22s22px22py12pz1
  • C) 1s22s22px22pz2
  • D) 1s22s22px22py2
  • E) 1s22s22px4

5) How many valence electrons do the halogens possess?

  • A) 5
  • B) 6
  • C) 2
  • D) 1
  • E) 7

6) How many valence electrons do the alkaline earth metals possess?

  • A) 1
  • B) 2
  • C) 7
  • D) 6
  • E) 8

7) How many valence electrons do the alkali metals possess?

  • A) 1
  • B) 2
  • C) 7
  • D) 6
  • E) 8

8) How many valence electrons do the noble gases possess?

  • A) 1
  • B) 2
  • C) 7
  • D) 6
  • E) 8

9) A cation of +2 indicates that an element has

  • A) lost two electrons.
  • B) lost two protons.
  • C) lost two neutrons.
  • D) gained two electrons.
  • E) gained two protons.

10) Give the ground state electron configuration for F⁻.

  • A) 1s22s22p6
  • B) 1s22s22p5
  • C) 1s22s22p4
  • D) 1s22s22p3
  • E) 1s22s22p2

11) Give the ground state electron configuration for the ion of Ba.

  • A) [Kr]5s25p6
  • B) [Kr]5s24d105p66s26p2
  • C) [Kr]5s24d105p66s1
  • D) [Kr]5s24d105p66s2
  • E) [Kr]5s24d105p6

12) Identify the isoelectronic elements.

  • A) Cl-, F-, Br-, I-, At-
  • B) N3-, S2-, Br-, Cs+, Sr2+
  • C) P3-, S2-, C1-, K+, Ca2+
  • D) Zn2+, Co2+, Cu2+, Cr2+, Cd2+
  • E) Ne, Ar, Kr, Xe, He

13) For a particular element, identify the species that has the smallest radius.

  • A) cation
  • B) anion
  • C) neutral
  • D) radical
  • E) They are all the same size

14) Identify the elements correctly shown by decreasing radii size.

  • A) N3- > N
  • B) K+ > K
  • C) N > N3-
  • D) Cu2+ > Cu+
  • E) S- > S2-

15) Choose the statement that is TRUE.

  • A) Outer electrons efficiently shield one another from nuclear charge.
  • B) Core electrons effectively shield outer electrons from nuclear charge.
  • C) Valence electrons are most difficult of all electrons to remove.
  • D) Core electrons are the easiest of all electrons to remove.
  • E) All of the above are true

16) Place the following in order of increasing IE1.

N       F       As

  • A) N < As < F
  • B) As < N < F
  • C) F < N < As
  • D) As < F < N
  • E) F < As < N

17) Place the following in order of decreasing IE1.

Cs      Mg     Ar

  • A) Cs > Mg > Ar
  • B) Mg > Ar > Cs
  • C) Ar > Mg > Cs
  • D) Cs > Ar > Mg
  • E) Mg > Cs > Ar

18) Place the following in order of increasing IE1.

K       Ca      Rb

  • A) Ca < K < Rb
  • B) Rb < Ca < K
  • C) Ca < Rb < K
  • D) Rb < K < Ca
  • E) K < Ca < Rb

19) Describe the reaction of the noble gases with metals.

  • A) inert
  • B) vigorous
  • C) mild reaction
  • D) forms water
  • E) dissolves

20) Describe the reaction of the alkali metals with non-metals.

  • A) inert
  • B) vigorous
  • C) mild reaction
  • D) forms water
  • E) dissolves