Which of the following statements is incorrect ?

Options

A. in the long form of periodic table, the number of period indicates the value of principal quantum number.
B. There are four `d-` block series comprising of total 40 elements in the long form of periodic table.
C. `s-` block , `d-` block and `f-` block elements are metals.
D. All `p-` block elements are non`-` metal.

Answer

4

Explanation

All `p-`block elements are metal, non`-` metal and metalloid.