When sodium atom form the ion Na+,

Chemistry

WAEC 2007

A. it gains one proton
B. it achieves a noble gas configuration
C. its atomic number increases
D. it gains one electron

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Correct Answer: Option B

Explanation

When the sodium atom forms an ion, Na+ it loses one electron, i.e. it achieves a noble gas electronic configuration. It will lose one of its 11 electrons to have 10 electrons like neon.
\(Na - e^- → Na^+\)
Na → \(Na^+ + e^-\)

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When sodium atom form the ion Na+,

Correct Answer: Option B

Explanation

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