In an universe other than earth all the quantum numbers have same value as on earth except .l. and .s.. Azimuthal quantum number can have values from 0 to (n + 1) in integral step and s (spinquantum no.) has values of (-1/2 , 0 & + 1/2) . If all rules like Aaufbau rule, Hund.s rule and Paulis exclusion rule follow in other universe also. No. of element in third period of another universe will be

In an universe other than earth all the quantum numbers have same valu

1.	In an universe other than earth all the quantum numbers have same value as on earth except .l. and .s.. Azimuthal quantum number can have values from 0 to (n + 1) in integral step and s (spinquantum no.) has values of (-1/2 , 0 & + 1/2) . If all rules like Aaufbau rule, Hund.s rule and Paulis exclusion rule follow in other universe also. No. of element in third period of another universe will be
Answer» 27 32 36 42 Solution :`N= 1 , n=2 , n= 3 , n=4` `l = 0 to 1 s , l= 1 to 1p , l = 2 to 1d` `n=2 , l = 0 to 2 s, l =1 to 2P , l = 2 to 2d, l = 3 to 2f` `n = 3 , l = 0 to 3s, l = 1 to 3 p , l = 2 to 3 d,` `l = 3 to 3 f , l = 4 to 3g` `n = 4 , l =0 to 4s , l = 1 to 4p , l=1 to 4d` `l =3 to 4f , l = 4 to 4g, l = 5 to 4h` Electronic configuration `to 1s, 1p , 2S , 1d, 2p , 3s , 3d , 4s , 3d` For third PERIOD `3s^3 , 3d^(15) , 3p^9`, Number of element = 27