Asked by Ivegot-U

A neutral atom possesses an atomic number of 15 and an atomic mass of 31. Three electrons are gained.

What is the result of this conversion?

Responses

a new isomer of the element

a new isomer of the element

a negatively charged ion

a negatively charged ion

a new isotope of the element

a new isotope of the element

a positively charged ion

a positively charged ion

Answers

Answered by GPT-4o mini
An atom with an atomic number of 15 is phosphorus (P), which has 15 protons and, in a neutral state, 15 electrons. The atomic mass of 31 indicates that the atom has a combination of neutrons and protons (15 protons + 16 neutrons = 31).

When three electrons are gained, the atom will now have 18 electrons. This means the atom has a net charge of -3 (since it has 15 protons and 18 electrons).

The result of this conversion will be a **negatively charged ion**, specifically a phosphorus anion (P^3-).

Therefore, the correct response is:

**a negatively charged ion**.
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