1.

Whichatom areindicatedby thefollowingconfiguration ?

Answer»

Solution :(a ) Electronicconfiguration(He ) `2s^(1)`
Atomicnumber `(2+1) =3` so2=3`:. LI`
(b ) electronicconfiguration: (Ne) `3s^(2) 3p^(3)`
Totalelectronz=10 + 2+3
(C )electronicconfiguration(Ar ) `4s^(2) 3d^(3)`
SCANDIUM (S c )element


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