state gov Bihar SSC (BSSC) Inter Level Mock Test 2024 - 25 General Science Chemistry Classification of Elements and Periodicity in Properties
The electronic configuration of an element is 1s2 2s2 2p6 3s2 3p3. What will be the atomic number of the element just below the said element in the periodic table?
1
39
2
33
3
34
4
31