The electronic configurations of three elements A, B and C are as fol

1.	The electronic configurations of three elements A, B and C are as follows: A2,8,1B2,8,7C2,4 (a) Which of these elements is a metal? (b) which of these elements are non-metals? (c) Which two elements will combine to form an ionic bond? (d) Which tow elements will combine to form a covalent bond? (e) Which element will form an anion of valency 1?
Answer» The electronic configurations of three elements A, B and C are as follows: $\begin{matrix} A & 2, 8, 1 B & 2, 8, 7 C & 2, 4 \end{matrix}$ (a) Which of these elements is a metal? (b) which of these elements are non-metals? (c) Which two elements will combine to form an ionic bond? (d) Which tow elements will combine to form a covalent bond? (e) Which element will form an anion of valency 1?

The electronic configurations of three elements A, B and C are as follows: A2,8,1B2,8,7C2,4 (a) Which of these elements is a metal? (b) which of these elements are non-metals? (c) Which two elements will combine to form an ionic bond? (d) Which tow elements will combine to form a covalent bond? (e) Which element will form an anion of valency 1?

Answer»

The electronic configurations of three elements A, B and C are as follows:
$\begin{matrix} A & 2, 8, 1 B & 2, 8, 7 C & 2, 4 \end{matrix}$

(a) Which of these elements is a metal?
(b) which of these elements are non-metals?
(c) Which two elements will combine to form an ionic bond?
(d) Which tow elements will combine to form a covalent bond?
(e) Which element will form an anion of valency 1?

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