Number of exchange pairs possible for 3d`overset(7)` configuration are

(A) 13
(B) 12
(C) 11
(D) 10

Calculate the number of exchange pairs of electrons present in configuration of Cu according to Aufbau principle. Considering 3d orbitals.

(-16)+14-(-13) is equal to: (a) -11 (b) 12 (c) 11 (d) -15

In which compund D- exchange is possible in presence of OD^(-) // D_(2)O ?

3d^4 configuration may have the exchange of s

The median of first 10 prime numbers is (a) 11 (b) 12 (c) 13 (d) 14

Number of pairs of cranial nerves in birds is (a) 6 (b) 10 (c) 12 (d) 14

|-|-7|-3| is equal to (a) -7 (b) 7 (c) 10 (d) -10

Which of the following is a proper fraction? (a) (13)/(17) (b) (17)/(13) (c) (12)/5 (d) 1 3/4

Consider the number N = 8 7 a 2 7 9 3 1 b , where a , b are single digit whole numbers. Number of possible ordred pairs (a, b) for which N is divisible by 72 is "(a) 0 (b) 1 (c) 2 (d) 3"

If a ,b in {1,2,3,4} and a x^2+b x+1=0 has real roots then number of possible ordered pairs of (a , b) is (a)6(b) 7 (c) 10 (d) 12