Question

. Electronic configuration of three elements is given in the table . Elements Electronic configuration X 1s2 , 2s2 2p6 , 3s2 Y 1s2 , 2s2 2p6 ,3s2 3p6 , 4s2 Z 1s2 , 2s2 2p6 a) Which element has larger atomic size among these elements? Why? b) Which element has smaller atomic size among these elements? Why? c) Which element has 8 valence electrons among these elements?​

Answer 1

Answer:

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