mark an element that belongs to d block and have maximum 24 electrons with same spin ? some atomic no's are given below ? (1) 38 (2) 41 (3) 47 (4) 51

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9, 12, 16, 20, 38, 47

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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?

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