1. Which best explains why ionization energy tends to decrease from the top to the bottom of a group?

A. The number of orbitals decreases.

B. The number of neutrons decreases.

C. Electrons get closer to the nucleus.

D. Electrons get farther from the nucleus.

3. When electrons are removed from the outermost shell of a calcium atom, the atom becomes

A. an anion that has a larger radius than the atom.

B. an anion that has a smaller radius than the atom.

C. a cation that has a larger radius than the atom.

D. a cation that has a smaller radius than the atom.

Question

Chemistry

Jace Combs

25 June, 14:33

1. Which best explains why ionization energy tends to decrease from the top to the bottom of a group?

A. The number of orbitals decreases.

B. The number of neutrons decreases.

C. Electrons get closer to the nucleus.

D. Electrons get farther from the nucleus.

3. When electrons are removed from the outermost shell of a calcium atom, the atom becomes

A. an anion that has a larger radius than the atom.

B. an anion that has a smaller radius than the atom.

C. a cation that has a larger radius than the atom.

D. a cation that has a smaller radius than the atom.

+5

Answers (1)

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Jack Henson · Answer 1

1. Which best explains why ionization energy tends to decrease from the top to the bottom of a group?

D. Electrons get farther from the nucleus. They experience a weaker attraction to the positive charge of the nucleus.

3. When electrons are removed from the outermost shell of a calcium atom, the atom becomes

D. a cation that has a smaller radius than the atom. Since the atom is losing an electron, it not only becomes positively charged, also the effective nuclear charge diminishes making the remaining electrons aproach the nucleus.