Define the Term ‘Valency’.

Define the term ‘valency’.

एका वाक्यात उत्तर

Valency is the number of hydrogen atoms which combine with (or displace) one atom of the element forming a Compound.

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पाठ 5: Language of Chemistry - Exercises

पाठ 5 Language of Chemistry
Exercises | Q 2.1

Write the names and symbols of the first twenty elements that you have studied in class VI & VII.

State what a chemical formula denotes.

Write the formula of the compound formed – given symbols and combining power or capacity (valency) of the following element in the compound.

Na¹⁺ Cl^1-

Select the correct answer from the choice given below.
The symbol of mercury is

State the type of element for the following:

Fluorine

State what is meant by the term ‘activity series of metals’.

Write the radical of the following valency:

Iodine

Give the formula of the following gas:

Sulphur dioxide

Name the elements with the following symbols.

How many elements are known at present?