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प्रश्न
Give the names and symbols of five familiar substances which you think are elements.
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उत्तर
The names of five familiar elements are:
- Oxygen: O
- Iron: Fe
- Gold: Au
- Silver: Ag
- Hydrogen: H
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संबंधित प्रश्न
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 is meant by atomicity? Name the diatomic element.
The formula of the sulphate of an element M is M2(SO4)3
Write the formula of it
Phosphate
The formula of the sulphate of an element M is M2(SO4)3
Write the formula of its
Acetate
Explain the terms ‘chemical formula’.
Match the symbols of non-metallic elements with their correct combining power or capacity.
(a) O
(b) S
(c) Cl
Combining power or capacity A : 3; B : 2; C : 1. (negative valencies)
Select the correct answer from the choice given below.
The type of element-phosphorus
Give the symbol of the following element:
Phosphorus
Give the symbol of the following element:
Aluminium
What is the rarest natural element on the earth?
