Q .Which of the following electron configurations is correct for nickel (atomic number "28" )? a) `1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(1)3d^(9)`
(b) `1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(2)3d^(8)`
(c) `1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(0)3d^(10)`

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)

Consider the following list of electron configurations: (1) 1s^(2)2s^(2)3s^(2) (2) 1s^(2)2s^(2)2p^(6) (3) 1s^(2)2s^(2)2p^(6)3s^(1) (4) 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(2) (5) 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(2)3d^(6) Which one of the above configurations represents an excited state of a neutral atom?

Consider the following list of electron configurations: (1) 1s^(2)2s^(2)3s^(2) (2) 1s^(2)2s^(2)2p^(6) (3) 1s^(2)2s^(2)2p^(6)3s^(1) (4) 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(2) (5) 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(2)3d^(6) Which one of the above configuration represents a neutral atom that readily forms a singly charged positive ion?

Consider the following list of electron configurations: (1) 1s^(2)2s^(2)3s^(2) (2) 1s^(2)2s^(2)2p^(6) (3) 1s^(2)2s^(2)2p^(6)3s^(1) (4) 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(2) (5) 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(2)3d^(6) Which one of the above configuration represents a transition element?

Match list-I with list-II and select the correct answer using the codes given below: {:(List-I,List-II),(("element"),"(electronic configuration)"),((a)"Galium",i.1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(2)3d^(1)),((b)"Vanadium",ii.1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(2)3d^(10)),((c)"Zinc",iii."1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(2)3d^(10)4p^(1)),((d) Scandium,iv.1s^(2)2p^(2)2p^(6)3s^(2)3p^(6)4s^(2)3d^(3)):} Codes-

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

Elements A, B, C, D and E have the following electronic configurations: A: 1s^(2) 2s^(2) 2p^(1) B: 1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(1) C: 1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(2) D: 1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(5) E: 1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(6) 4s^(2) Which among these will belong to the same group in the periodic table?

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)