In modern periodic table, if an element has electronic configuration 1s^(2), 2s^(2), 2p^(6), 3s^(2), 3p^(4), then what will be the atomic number of element, which is just below the element in its group ?

In modern periodic table, if an element has electronic configuration 1

1.	In modern periodic table, if an element has electronic configuration 1s^(2), 2s^(2), 2p^(6), 3s^(2), 3p^(4), then what will be the atomic number of element, which is just below the element in its group ?
Answer» 18 34 45 24 Solution :34 Electronic configuration of the element `1S^(2) 2s^(2) 2p^(6) 3s^(2) 3P^(4)` ` :. ` TOTAL electrons in it = 16 and Z = 16 Which INDICATES element is S(Z = 16) of`III^(rd)` Period, and`16^(th)` /VIB GROUP. Element just below S in same group is Se having atomic number 34.