(A) Cr^(+3) and Co^(2+) ions have same number of unpaired electrons but the observed magnetic moment of Cr^(3+) is 3.87 B. M and that of Co^(2+) is 4.87 B.M (R) Due to symmetrica electronic configuration there is no orbital motion of unpaired electron in Cr^(3+) ion while appreciable orbital contribution takes place in Co^(2+) ion .

(A) Cr^(+3) and Co^(2+) ions have same number of unpaired electrons bu

1.	(A) Cr^(+3) and Co^(2+) ions have same number of unpaired electrons but the observed magnetic moment of Cr^(3+) is 3.87 B. M and that of Co^(2+) is 4.87 B.M (R) Due to symmetrica electronic configuration there is no orbital motion of unpaired electron in Cr^(3+) ion while appreciable orbital contribution takes place in Co^(2+) ion .
Answer» Both (A) and (R) are TRUE and (R) is the CORRECT EXPLANATION of (A) Both (A) and (R) are true and (R) is not the correct explanation of (A) (A) is true but (R) is FALSE Both (A) and (R) are false Solution :Both (A) and (R) are true and (R) is the correct explanation of (A)