1.

The atomic number of three elements A, B and C are 10 , 18and 8respectively . Identify the element which is chemically reactive ?

Answer»

A
B
C
Both a and B

Solution :`{:("Element","Atomic number","Electronic CONFIGURATION"),(""A," "10," "2_(,)8_(,)),(""B," "18," "2_(,)8_(,)8),(""C,""8," "2_(,)6):}`
HENCE , 'C' is chemically reactive . A and B are chemiclly INERT because of stable octet configuration.


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