Question

Hydrogen possesses fewer valence electrons than lithium.

True

False

The Lewis dot structure for aluminum includes the symbol, "Al," and a total of three dots around the symbol.

True

False

An atom's electron affinity value indicates how favorable it is for the atom to form a negatively charged ion.

True

False

The name of the ion P3- is phosphoride ion.

True

False

Answer 1

Hydrogen possesses fewer valence electrons than lithium.

Answer: False.

Explanation: H and Li are both in Group 1. They both have one valence electron.

The Lewis dot structure for aluminum includes the symbol "Al" and a total of three dots around the symbol.

Answer: True.

Explanation: The Lewis structure for Al is ·Al:

An atom's electron affinity value indicates how favorable it is for the atom to form a negatively charged ion.

Answer: True.

The electron affinity is the energy absorbed or released when a neutral atom gains an electron. The more energy that is released, the more stable the ion,

The name of the ion P³⁻ is phosphoride ion.

Answer: False

Explanation: The name of P³⁻ is phosphide. The stem name of phosphorus in binary ionic compounds is “phosph-.”

Answer 2

Answer:

False, True

Explanation:

False

The atomic number of H and Li are 1 and 3 respectively. Atomic number is equal to the number of protons which is eqaul to the number of electrons. The electron configuration of H and Li are as follows:

H = 1s¹

Li =  1s²  2s¹

The valence electrons of both H and Li are 1.  

True

Al has 3 valance electrons.  Hence the Lewis dot structure for aluminum includes the symbol, "Al," and a total of three dots around the symbol.

True

Electron affinity is the amount of of energy released or absorbed when an electron is added to a neutral gaseous atom to form a  negatively charged ion.

False

The name of the ion P³⁻ is phosphide ion.