Given below are some elements of the modern periodic table: 4Be,9Fe,14

1.	Given below are some elements of the modern periodic table: 4Be,9Fe,14Si,19K,20Ca (i)Select the element that has one electron in the outermost shell and write its electronic configuration. (ii)Select two elements that belong to the same group. Give reason for you answer. (iii) Select two elements that belong to the same period. Which one of the two has bigger atomic size?
Answer» Given below are some elements of the modern periodic table: _{$4^{B e}, 9^{F e}, 14^{S i}, 19^{K}, 20^{C a}$} (i)Select the element that has one electron in the outermost shell and write its electronic configuration. (ii)Select two elements that belong to the same group. Give reason for you answer. (iii) Select two elements that belong to the same period. Which one of the two has bigger atomic size?

Given below are some elements of the modern periodic table: 4Be,9Fe,14Si,19K,20Ca (i)Select the element that has one electron in the outermost shell and write its electronic configuration. (ii)Select two elements that belong to the same group. Give reason for you answer. (iii) Select two elements that belong to the same period. Which one of the two has bigger atomic size?

Answer»

Given below are some elements of the modern periodic table:

_{$4^{B e}, 9^{F e}, 14^{S i}, 19^{K}, 20^{C a}$}

(i)Select the element that has one electron in the outermost shell and write its electronic configuration.

(ii)Select two elements that belong to the same group. Give reason for you answer.

(iii) Select two elements that belong to the same period. Which one of the two has bigger atomic size?