Which is the atomic number of another element present in the same group as the element with `Z =1 3` is present

What is the atomic number of the element present in the second period and group 15.

What is the atomic number of the element present in the second period anf group 15.

Which common property do all the elements present in the same group have as the element fluorine ?

Set of continuos atomic number of elements are present in the same group as well as same period.

Mention the name and atomic number of the element present in group 13 of third period.

Number of elements present in Period 1 are …………..

If the atomic number of an element X is 17, then what will be the atomic number of the element lying in the same group as that of X but in the fifth period?