Which of the following statement(s) is (are) correct? — Atomic Structure Chemistry Question

💡 Solution & Explanation

Cr has exceptional configuration [Ar]3d$^5$4s$^1$. $m$ ranges from $-l$ to $+l$, which includes negatives. Ag (Z=47) has 23 pairs (46 electrons) and 1 unpaired, giving 24 of one spin and 23 of the other. The oxidation state of N in hydrazoic acid (HN$_3$) is -1/3. Therefore, correct answer is A, B, C.