O^{2-} is isoelectronic with

KVPY SX SB Exam 2015 Question Paper

Question : 42 of 120

Marks: +1, -0

^{2-}

is isoelectronic with

Solution:

^{–2}

is isoelectronic with Mg

^{+2}

O^{–2} ––––––▸ 8 + 2 = 10 e^{–}

Mg^{+2 } ––––––▸12- 2 = 10 e^{–}

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