Question

question 5 (2 points)
when a neutral sulfur atom gains two electrons to form the sulfide anion, its electron configuration becomes:
ne
ar3s²3p⁴
ar
ne 3s²3p⁴

Explanation:

• Sulfur has an atomic number of 16. Its neutral electron configuration is \([Ne]3s^{2}3p^{4}\).
• When it gains two electrons to form \(S^{2 -}\), it has the same electron configuration as argon (Ar), which has 18 electrons.
• The electron configuration of argon is \([Ne]3s^{2}3p^{6}\), which can also be written as \([Ar]\) (since argon's electron configuration fills its shells completely and is a noble - gas configuration).

Answer:

$$ [Ar] $$