Four elements A, B, C and D have atomic numbers 12,13,14 and 15 respectively. Answer the following questions giving reasons :
Four elements A, B, C and D have atomic numbers 12,13,14 and 15 respectively.
Answer the following questions giving reasons :
(i) What is the number of valence electrons and valency of D ?
(ii) Which of them will have largest atomic radii ?
(iii) Which of these elements will form the most basic oxide ?
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(i) Valence electrons,in 'D'. = 5 and Valency of 'D' =3.
(ii) 'A' will have largest atomic radii because atomic radius decreases across a period from left to right.
(iii) 'A' will form the most basic oxide as it is most metallic.
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