(English Medium) ICSE Class 10 - CISCE Question Bank Solutions for Chemistry

Explain the following:

The reducing power of element increases down in the group while decreases in a period.

Arrange the elements of group 17 and group 1 according to the given conditions.

Increasing electron affinity

Arrange the elements of group 17 and group 1 according to the given conditions.

Increasing electron affinity

Which has higher E.A. fluorine or Neon?

An element in period 3 whose electron affinity is zero.

How would you obtain a base from another base.

Arrange the following according to the instruction given in the bracket:

F, B, N, O  (In the increasing order of electron affinity).

Why is the electron affinity of fluorine less than chlorine?

A, B, C are three elements in which B is an inert gas other than helium. With this information complete the following table.

Also, explain the following:

1. Electron affinity of element A is more than that of element C.
2. lonization energy of element C is less than that of element A.
3. Electron affinity of B is zero.

A, B, C are three elements in which B is an inert gas other than helium.With this information complete the following table.

Also, explain the following : Electron affinity of B is Zero.

Fill in the blank
Energy released when electron is added to a neutral gaseous atom is called ______.

Fill in the blank
The nature of oxide Al₂O₃ is ____

Fill in the blank
Noble gases have ______ electron affinity.

State whether the following statement is true or false
Al₂O₃ is an amphoteric oxide.

State whether the following statement is true or false
The elements with higher electron affinity have higher ionization potential.

Arrange the following in increasing order of property indicated
F, Cl, Br, I (electron affinity)

What is electron affinity?

Explain
Halogens have high electron affinity.

With reference to the variation of properties in the Periodic Table, which of the following is generally true?
Electron affinity increases going down a group.