Some statements are given. Among them the correct statements area) IP2 of sodium is greater than that of magnesiumb) IP2 of lithium is greater than IP1 of heliumc) IP2 of sodium is greater than IP1 of neond) IP1 of oxygen is greater than that of nitrogen

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All are correct

Only a, b and c are correct

Only a and b are correct

Only a and d are correct

answer is B.

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Detailed Solution

a) IP2 of Na>Mg....True Na+ has inert gas configurationb) IP2 of lithium means removal of electron from stable Li+ lon. Li+....1s2 He....1s2 Both Li+ and He have 1s2 configuration but effective nuclear charge of Li+>He IP2 of Li > IP1 of He Thus, IP2 of Li>IP1 of He.....TrueC)IP2 of Sodium means removal of electron from stable Na+ ion. Na+....1s2 2s2 2p6 Ne ....1s22p63p6 Both Na+ and Ne have 1s2 2s2 2p6 configuration but effective nuclear charge of Na+ > Ne IP2 of Na > IP1 of Ne Thus IP2 of Na >IP1 of Ne.....TrueD) IP1 of oxgyen > Nitrogen........flase Thus a,b.c are correct

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