(English Medium) ICSE Class 9 - CISCE Question Bank Solutions for Chemistry

Name or state following with reference to the element of the first three periods of the periodic table.

A non-metal in period 2 which is tetravalent.

Select the correct answer from the options given below.

It is a metal in period 2 having electronic configuration 2, 1?

Select the correct answer from the options given below.

It is a period having elements from atomic no. 11 to 18.

Select the correct answer from the options given below.

Is the group number of the element whose atomic number is 4.

Fill in the blanks from the words A to F given below’.

A: Decreases
B: Increases
C: Remains same
D: Increases by one
E: Electropositive
F: Electronegative

Across a period from left to right in the Modern Periodic Table.
No. of electron shells _________; No. of valence electrons __________: Electronegativity increases Character of elements changes from electropositive to ________.

Fill in the blanks from the words A to F given below.

A: Decreases
B: Increases
C: Remains same
D: Increases by one
E: Electropositive
F: Electronegative

Down a group in the Modern Periodic Table.
No. of electron shells __________; No. of valence electrons ________; Electronegativity ________ Character of elements changes from _________ to ____________.

Give a reason for the following:

A transition from metallic to non-metallic elements is seen on moving from left to right in a period of the periodic table.

State the following:

The group to which the element with an electronic configuration of 2, 8, 2 belongs.

State the following:

The group which contains highly electropositive metals including sodium.

Complete the table pertaining to the following elements given in Column I.

State the use of hydrogen –

In hydrogenation of oil and coal

State the use of hydrogen –

In the extraction of metals

State if the following element or radical is divalent?

Lithium

State if the following element or radical is divalent?

Nickel

State if the following element or radical is divalent?

Ammonium

State if the following element or radical is divalent?

Bromide

State if the following element or radical is divalent?

Sulphite

State if the following element or radical is divalent?

Nitride

State if the following element or radical is divalent?

Carbide

State if the following element or radical is divalent?

Chromium