Q.

This section contains questions each with two columns-I and II. Match the items given in column I with that in column II.

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answer is A-P;Q;R,B-R;S,C-Q;R,D-P;Q.

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Detailed Solution

a-p;q;r,b-r;s,c-q;r,d-p;q(a) p, q, r:(q) m =0 present in all orbitals2 + 2 + 2 + 2 + 2 + 2 + I = 13 (minimum)(r) Atom is paramagnetic. (It is a transition element.)(b) r, s;(r) Na (Z = ll) = 1s2 2s2 2p6 3s1 (n - l)Na2+ = 2p5 (n = l)Number of unpaired electron in Na2+ = Im =0 (present in all orbitals.)2+2+2+l = 7(minimum)(s) Atom is paramagnetic. (It is not a transition element.)(c) q, r;Mn(Z=25)=1s22s22p63s23p64s23d5Mn2+=3d5m = 0 (present in all orbitals.)m = 2+2+2+2+2+2+ 1= 13Number of unpaired electron in Mn2+ = 5Atom is paramagnetic.It is a transition element(d) p, qPd(Z=46)=1s22s22p63s23p64s23d104p65s24d8Pd2+=4d8Number of unpaired electron in Pd2+ = 2m = 0 present in all orbitals.m = 2+2+ 2+ 2+2+ 2+2+2+ 2+ 1 = 19Atom is diamagnetic.It is a transition element.
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