`P(-2)=6(-2)^3+29(-2)^2+44(-2)+21`

""_(21 ) Sc : 1s^(2 ) 2s ^(2) 2p ^(6) 3s^(2)3p ^(6 ) 4s ^(2) 3d^(1) Scandium belongs to which block ?

If P = 21(21^2-1^2)(21^2-2^2)(21^2-3^2)...............(21^2-10^2),t h e nP is divisible by a. 22 ! b. 21 ! c. 19 ! d. 20!

If P = 21(21^2-1^2)(21^2-2^2)(21^2-3^2)...............(21^2-10^2),t h e nP is divisible by a. 22 ! b. 21 ! c. 19 ! d. 20!

If P = 21(21^2-1^2)(21^2-2^2)(21^2-3^2)...............(21^2-10^2),t h e nP is divisible by a. 22 ! b. 21 ! c. 19 ! d. 20!

If P = 21(21^2-1^2)(21^2-2^2)(21^2-3^2)...............(21^2-10^2),t h e nP is divisible by a. 22 ! b. 21 ! c. 19 ! d. 20!

Let A={1,2,3,4} and R be a relation in given by R= (1,1), (2, 2), (3. 3). (4,4), (1,2), (2,1),(3,1), (1,3)} . Then R is

Let A = {1,2,3,4} and R be a relation in A given by R = {(1,1) (2,2) (3,3) (4,4) (1,2) (2,1) (3,1) (1,3)} . Then R is

Name the element with the following electronic configurations . (a) 1s^(2)2s^(2) 2p^(6) 3s^(2) 3p^(1) (b) 1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(6) 4s^(1) (c ) 1s^(2) 2s^(1) 2p^(6) 3s^(2) 3p^(6) 3d^( 5) 4s^(1)

Name the element with the following electronic configurations . (a) 1s^(2)2s^(2) 2p^(6) 3s^(2) 3p^(1) (b) 1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(6) 4s^(1)