MEDIUM
10th CBSE
IMPORTANT
Earn 100

How does the electronic configuration of an atom of an element relate to its position in the modern periodic table?
Important Questions on Periodic Classification of Elements
MEDIUM
10th CBSE
IMPORTANT
Arrange the following in order of decreasing basic character:
.

EASY
10th CBSE
IMPORTANT
Which of the following is amphoteric in nature?
A.
B.
C.
"Enter your correct answer as A, B or C."

EASY
10th CBSE
IMPORTANT
Is valency a periodic property? How does it vary along a period?

MEDIUM
10th CBSE
IMPORTANT
Consider the following elements:
.
(a) Which of these elements belong to the same group of the periodic table?
(b) Which of these elements belong to the same period of the periodic table?

MEDIUM
10th CBSE
IMPORTANT
An element has an atomic number 16, state:
(a) The period to which it belongs.
(b) The number of valence electrons.
(c) Whether it is a metal or non-metal.

MEDIUM
10th CBSE
IMPORTANT
The atomic numbers of three elements A, B and C are given below:
Element | Atomic Number |
---|---|
A | 11 |
B | 13 |
C | 18 |
(ii) Which element belongs to group 13?
(iii) Which element belongs to group 18?
(iv) To which period do these elements belong?

MEDIUM
10th CBSE
IMPORTANT
An element is in group 13 of the periodic table :
(i) What is the valency of ?
(ii) What will be the formula of its oxide?
(iii) What will be the formula of its chloride?

MEDIUM
10th CBSE
IMPORTANT
An element A has an atomic number of 8, another element B has atomic number 12:
(a) In which group of the periodic table would you expect to find these elements?
(b) What type of bond is formed between A and B?
(c) Suggest a formula of the compound formed between A and B.
