Que. 3. D. Identify the tense of following sentences..
1. I received your mail yesterday.
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The valency of the element is 3
We add all the superscripts to know the number of electrons in an atom. Thus total number of electrons will be 2+8+5 = 15. Valency is defined as the number of electrons gained or lost in order to achieve nearest noble gas configuration
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Answer:
Simple past tense
Explanation:
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