Question

i have 13 protons. i am one of the element in modern periodic table. who am i. i am in which period and group​

Answer 1

Explanation:

Elements with atomic number = 13 has 13 protons and 13 electrons.

After atomic number 10, 3rd periods starts.

The configuration of element is : (2,8,3). So it belongs to group III

The valency of compound is 3. So the formula of oxide should be X2O3. 

Answer 2

Answer:

Aluminium has 13 protons

Its belong to Group 13 and  period 3 of the modern periodic table.