Give example. Basic radicals

Give example.

Basic radicals

One Line Answer

Mg²⁺, K⁺, Fe²⁺, Cu²⁺

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Chapter 4 Measurement of Matter
Exercise | Q 1. b. | Page 57

Calculate the number of aluminium ions present in 0.051 g of aluminium oxide.

(Hint: The mass of an ion is the same as that of an atom of the same element. Atomic mass of Al = 27 u)

The valency of calcium is 2. Write the valencies of other radical in the following :

Write the names of `"NH"_4"OH"` compounds :

Write the names of `"HgO"` compounds :

Write the names of ZnS compounds :

Name the particle which has 18 electrons, 18 neutrons and 17 protons in it.

Fill in the following blank with suitable word :

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

The valencies (or charges) of some of the ions are given below :

Ion Valency Ion Valency (Charge) (Charge)

Sodium ion 1+ Nitrate ion 1–
Copper ion 2+ Sulphide ion 2–

Using this information, write down the formulae of :

A particle X has 17 protons, 18 neutrons and 18 electrons. This particle is most likely to be :

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

Ferrous sulphide

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

Sodium zincate

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

Potassium manganate

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 __________.

Select the correct answer to the statement given below:

An elementary particle of matter – of a group of atoms of different elements behaving as a single unit with charge on the group.