Question

1.What information does the formula of a compound give?
2. Define valency.​

Answer 1

Answer:

Valency is the combining capacity of an element. For metals, it is equal to the number of electrons in the outermost shell of their atoms, and for nonmetals it is eight minus the number of electrons in the outermost shell. Transition metals like iron and copper show more than one valency in compound formation.

Answer 2

What information does the formula of a compound give?

Answer: A compound is a substance made up of a definite proportion of two or more elements. A chemical formula tells us the number of atoms of each element in a compound. It contains the symbols of the atoms of the elements present in the compound as well as how many there are for each element in the form of subscripts

Define valency.

Answer: In chemistry, 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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