Question

4. Write the formula of lead phosphate.
5. What is meant by the valency of an element?​

Answer 1

4. Lead phosphate has the formula Pb3(PO4)2, and the accepted practice for writing the solubility reaction of a sparingly soluble compound that will dissociate into a cation and anion is shown.

5. Valency is the combining power of an element. Elements in the same group of the periodic table have the same valency. The valency of an element is related to how many electrons are in the outer shell. The noble gases have the valency 0 as they do not usually combine with other elements.

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Answer 2

Answer:

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Explanation:

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