Symbol of mercury is

MCQ

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पाठ 9: Matter around us - Exercises [पृष्ठ १०१]

पाठ 9 Matter around us
Exercises | Q I. 4. | पृष्ठ १०१

Two elements X and Y have valencies of 5 and 3, and 3 and 2, respectively. The elements X and Y are most likely to be respectively :

What do the following symbol stand for?

Give the names and symbols of the first twenty elements of the periodic table.

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

Ca²⁺ NO₃^1-

Select the correct answer from the choice given below.

The type of element-phosphorus

Give the symbol of the following element:

Arsenic

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

Give the symbol of the following element:

Nitrate

Define the term ‘valency’.

State the valency of the following metallic element and write symbol with the valency
Zinc