Give example. Bivalent acidic radicals

Give example.

Bivalent acidic radicals

एका वाक्यात उत्तर

S^2-,O^2-,Se^2-

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पाठ 4: Measurement of Matter - Exercise [पृष्ठ ५७]

पाठ 4 Measurement of Matter
Exercise | Q 1. e. | पृष्ठ ५७

What are polyatomic ions? Give examples.

Write the symbols and valencies of the following radicals:

Tick (√) the correct answer.

The sulphate radical is written as S0₄^2-. What is the formula of calcium sulphate ?

What is the name of a particle which contains 10 electrons, 11 protons and 12 neutrons ?

Fill in the following blank with suitable word:

The particle which is formed by the loss of electrons by an atom is called..............

An element X has a valency of 2. Write the simplest formula for bromide of the element.

What is the difference between a cation and an anion ? Explain with examples.

What is an ion ? How is an ion formed ? Explain with the help of two examples of different ions.

Write symbols of the following elements and the radicals obtained from them and indicate the charge on the radicals.

Mercury, potassium, nitrogen, copper, sulphur, carbon, chlorine, oxygen

What do you understand by the following terms?

Acid radical

Write the basic radicals and acidic radicals of the following and then write the chemical formulae of these compound.

Sodium zincate

Name the following radicals and give their valencies:

1. SO₄
2. CO₃
3. OH₄.
4.Cr₂O₇

Fill in the blank:

A radical with one atom of sulphur and three atoms of oxygen are __________.