Which Best Explains Why an Al³⁺ Ion Is Smaller Than

question 35

Multiple Choice

Which best explains why an Al³⁺ ion is smaller than an Al atom?

• A)In forming the Al³⁺ ion,the Al atom loses the electrons in its outermost energy level,causing a decrease in the atomic radius.
• B)In forming the Al³⁺ ion,the Al atom gains three protons and the resulting net positive charge keeps the electrons more strongly attracted to the nucleus,reducing the radius.
• C)The Al³⁺ ion contains more electrons than the Al atom,which results in a greater attraction for the nucleus and a smaller atomic radius.
• D)In forming the Al³⁺ ion,the Al atom adds electrons into a higher energy level,causing a decrease in the atomic radius.
• E)There are more protons in an Al³⁺ ion than there are in an Al atom.

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Definitions:

Acrosomal Net

A structure in certain sperm cells, derived from the acrosome, that plays a role in fertilization by penetrating the egg's outer layers.

Fertilization Cone

A structure formed at the tip of a sperm cell or pollen tube that facilitates the fusion of the male gamete with the female gamete.

Polyspermy Barrier

A physiological and cellular mechanism in eggs to prevent fertilization by more than one sperm, ensuring normal development.

Zygote

The initial cell formed when two gamete cells are joined by means of sexual reproduction, possessing genetic material from both parents.