Sodium forms Na+ and not Na2+ because:

Sodium forms Na+ ion but it does not form Na2+ because of the low value of (IE)1 and high value of (IE)2Sodium has one valence electron. Sodium forms Na+ ion by losing its valence electron and attains the stable electronic configuration of Ne with a completed octet. This requires less energy. The removal of the second electron will break this stable electronic configuration and requires high energy.

Sodium forms Na+ and not Na2+ because:

Sodium forms Na+ ion but it does not form Na2+ because of the low value of (IE)1 and high value of (IE)2Sodium has one valence electron. Sodium forms Na+ ion by losing its valence electron and attains the stable electronic configuration of Ne with a completed octet. This requires less energy. The removal of the second electron will break this stable electronic configuration and requires high energy.

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Sodium forms Na⁺ and not Na²⁺ because:

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none of the above

first ionization potential is small and the difference in first and second ionization potentials is very large

sodium contains only one electron in outermost shell

radius of Na⁺ is much smaller than of Na⁺

answer is B.

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Detailed Solution

Sodium forms Na⁺ ion but it does not form Na²⁺ because of the low value of (IE)₁ and high value of (IE)₂
Sodium has one valence electron. Sodium forms Na⁺ ion by losing its valence electron and attains the stable electronic configuration of Ne with a completed octet.
This requires less energy. The removal of the second electron will break this stable electronic configuration and requires high energy.

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