4s^(2)-4s+1

Four elements P,Q,R & S have ground state electronic configuration as: {:(P rarr 1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(3),Q rarr 1s^(2) 2s^(2)2p^(6)3s^(2)3p^(1)),(R rarr 1s^(2) 2s^(2)2p^(6)3s^(2)3p^(6)3d^(10)4s^(2)4p^(3),S rarr 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(10)4s^(2)4p^(1)):} Order of IE_(1) values among the following is

What is the electronic configuration of Ca ? 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 (Ar)4s^2 (Ne) 3s^2 3p^6 4s^2 1s^2 2s^2 2p^6 3s^2 5s^2 3p^6

Examine the given electronic configurations. A- 1s^2 2s^2 2p^6 3s^2 3p^6 3d^(10) 4s^2 B- 1s^2 2s^2 2p^6 3s^1 C- 1s^2 2s^2 2p^6 3s^2 3p^6 D- 1s^2 2s^2 2p^6 3s^2 3p^6 4s^1 : Which of these elements belongs to 4^(th) period ?

Examine the given electronic configurations. A- 1s^2 2s^2 2p^6 3s^2 3p^6 3d^(10) 4s^2 B- 1s^2 2s^2 2p^6 3s^1 C- 1s^2 2s^2 2p^6 3s^2 3p^6 D- 1s^2 2s^2 2p^6 3s^2 3p^6 4s^1 : Which elements belongs to the same group?

Examine the given electronic configurations. A- 1s^2 2s^2 2p^6 3s^2 3p^6 3d^(10) 4s^2 B- 1s^2 2s^2 2p^6 3s^1 C- 1s^2 2s^2 2p^6 3s^2 3p^6 D- 1s^2 2s^2 2p^6 3s^2 3p^6 4s^1 : Which element has highest metallic ch-aracter ?

Examine the given electronic configurations. A- 1s^2 2s^2 2p^6 3s^2 3p^6 3d^(10) 4s^2 B- 1s^2 2s^2 2p^6 3s^1 C- 1s^2 2s^2 2p^6 3s^2 3p^6 D- 1s^2 2s^2 2p^6 3s^2 3p^6 4s^1 : Which element doesn’t participate in che-mical reactions generally ?

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)

Four elements P,Q,R & S have ground state electronic configuration as: {:(P rarr 1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(3),Q rarr 1s^(2) 2s^(2)2p^(6)3s^(2)3p^(1)),(R rarr 1s^(2) 2s^(2)2p^(6)3s^(2)3p^(6)3d^(10)4s^(2)4p^(3),S rarr 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(10)4s^(2)4p^(1)):} Comment which of the following option represent the correct order of true (T) & false (F) statement I size of P lt size of Q II size of R lt size of S III size of P lt size of R (appreciable difference) IV size of Q lt size of S (appreciable difference)

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