Advertisements
Advertisements
प्रश्न
What is meant by atomicity? Name the diatomic element.
Advertisements
उत्तर
The number of atoms of an element that join together to form a molecule of that element is known as its atomicity.
Diatomic molecules: H2, O2, N2, Cl2
APPEARS IN
संबंधित प्रश्न
On what principle are the following methods of separation based? Give one example of a mixture for each of the methods mentioned in which they are used
Magnetic separation
If the symbol for Cobalt, Co, were written as CO, what would be wrong with it?
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)
In the chemical word equation – Zinc + Sulphuric acid → Zinc sulphate + Hydrogen
The molecular equation is :
Zn + H2SO4 → ZnSO4 + H2[g].
State what [g] represents.
Elements are mainly classified into metals and non-metals. State six properties of metals which differ from non-metals.
Give the symbol of the following element:
Potassium
State the type of element for the following:
Boron
Give the formula of the following acid:
Sulphuric
Select the correct answer to the statement given below:
An element present in the earth’s crust, atmosphere and the human body.
State whether the following ion or radical given below of a non-metallic element exhibits valency: 1–, 2– or 3–. (write the ion or radical with the correct valency).
Hydroxide
