Question

Sir, I have two queries
1)Valency and _________ of an element is related to each other.
A) atomic mass
B)atomic number
C)molar mass
D)electric configuration
2)The valency of an element with electronic configuration ________ is 2
A)(2,5)
B)(2,4)
C)(2,6)
D)(2,7)​

Answer 1

Answer:

D) electric configuration

B)(2 , 4)

Answer 2

Answer:

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