Question

what does negative symbol is Cl^- represents? why is the negative symbol given? is it the valency or something else

Answer 1

Answer:

Since Cl has 7 electrons in its outermost shell and needs one more electron to complete its octet so it takes 1 electron from another atom and complete its octet. Since Cl has received 1 electron so it will have -1 or - charge.

Explanation:

Answer 2

Explanation:

When writing the symbol for an CI^ one- or two-letter element symbol is written first, followed by a superscript. The superscript has the number of charges on CI^ f ollowed by a + (for positive ions or cations) or - (for negative ions or anions).CI

the valence or valency of an element is a measure of its combining power with other atoms when it forms chemical compounds or molecules.

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