Question

State the number of subatomic particles which are positively charged.
(1) Why does the above element form an anion.
(lli) What is the valency of the given element.
(iv) What is the mass number of the element.

Answer 1

Answer:

mass no 19 , valency will be -1 , because by losing electron the element will become positively charged element which means aninon

Explanation:

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