Question

The tenth element in the Newland's periodic classification resembles the: A. Fourth. B. Ninth. C. First. D. Third. View Solution ...

Answer 1

Explanation:

Each period consist of series of element whose atom has same principal quantum number of outermost shell i.e in second period n= 2 this shell has 4 orbitals which can have 8 electrons hence second period contain 8 element from atomic number 3 to 10.