Question

Answer the following questions.
0-2 ion is an example for which type of ion ?
12. Write the formula of phosphate ion.
An ion having a positive charge on it is known as
14. What is the valency of chlorine ?
IS.
The scientist who proposed law of definite proportions.​

Answer 1

Answer:

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1. 2 ion is an example for which type of ion ?

2. Write the formula of phosphate ion.

3. An ion having a positive charge on it is known as

4. What is the valency of chlorine ?

5. The scientist who proposed law of definite proportions.

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1 . Answer

A negatively charged ion is known as anion. An anion is formed by the gain of one or more electrons by an atom. Example: A chlorine atom gains 1 electron to form a chloride ion, Cl–, which is an anion.

2. Answer

The empirical formula of phosphate is PO43−. It is a polyatomic ion with a molecular mass 94.9714 g/mol.

3. Answer

An ion having a positive charge on it is known as cations .

Explanation :

Positively charged ions are called cations. negatively charged ions, anions.

4 . Answer

Valency is defined as the combining capacity of atoms or molecules. It is obtained from the number of electrons present in the outermost shell of an atom. The atomic number of chlorine is 17 and the electronic configuration is 2, 8, 7. Therefore, the valency of chlorine is 1.

5 . Answer

Joseph Proust

Explanation :

The law of definite composition was proposed by Joseph Proust based on his observations on the composition of chemical compounds. Proust proposed that a compound is always composed of the same proportions of elements by mass.

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