1.

Shell NameThe maximum no. of electrons in a shellK2L8MXN32In the above table ‘x’ can be replaced by A) 28 B) 30 C) 18D) 8

Answer»

Correct option is C) 18

C) 18 

Best way to remember- 
K-2 then add 6 to get electrons of L and then add 10 to get electrons of M and then add 14 to get electrons of N.



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