1.

What information do you get from the figure given below about the atomic number, massnumber and valency of atom X?

Answer»

Answer:

: X element is Boron , Its atomic number is 5 , Its mass number is 11 , Valency of atoms is 3. Y element is Oxygen , Its atomic number is 8 , Its mass number is 16 , Valency of atoms is 5



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