The repeating periodicity of the blocks of 2, 6, 10, and 14 elements within sections of the periodic table arises naturally from the total number of electrons that occupy a complete set of s, p, d, ...

JEE Main session 1 is planned to be conducted on 22, 23, 24, 28, 29, and 30 January. The National Testing Agency (NTA) has already released the 2025 JEE Main Admit Card for the initial three days.