Which of the following element has 3s2 outermost electronic configuration ?
Mg
Na
Al
Si
As we learnt ,
Electronic configuration of magnesium -
Therefore, option(1) is correct.
NEET 2026 LIVE: UG application form correction window opens; exam dates, pattern
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NEET 2026 Registration LIVE: NTA extends MBBS, BDS application deadline to March 11; how to apply
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