EASY
10th CBSE
IMPORTANT
Earn 100

Write the atomic symbols of all the possible elements using the letters of magnesium (you may use capitals or capital formed by small letters).

Important Questions on Periodic Classification of Elements (The Periodic Table)

EASY
10th CBSE
IMPORTANT
Secondary Chemistry Class X>Chapter 5 - Periodic Classification of Elements (The Periodic Table)>QUESTIONS ON HIGHER ORDER THINKING SKILLS (HOTS)>Q 4
There are two shells in an atom. The number of electrons in the second shell is thrice the number of electrons in the first shell. Name the element.
EASY
10th CBSE
IMPORTANT
Secondary Chemistry Class X>Chapter 5 - Periodic Classification of Elements (The Periodic Table)>QUESTIONS ON HIGHER ORDER THINKING SKILLS (HOTS)>Q 5
Name two metals each with two valence electrons.
EASY
10th CBSE
IMPORTANT
Secondary Chemistry Class X>Chapter 5 - Periodic Classification of Elements (The Periodic Table)>QUESTIONS ON HIGHER ORDER THINKING SKILLS (HOTS)>Q 6

Which one of the figures I and II represent the correct measure of atomic radius (r)? Justify your answer.

Question Image

HARD
10th CBSE
IMPORTANT
Secondary Chemistry Class X>Chapter 5 - Periodic Classification of Elements (The Periodic Table)>QUESTIONS ON HIGHER ORDER THINKING SKILLS (HOTS)>Q 7

Atomic symbols of first 20 elements of the periodic table are jumbled in a circle.

Question Image

(i) Rearrange these elements in the increasing order of their atomic numbers.

(ii) Arrange these elements in their correct periods.

(iii) Arrange these elements in their correct groups.

EASY
10th CBSE
IMPORTANT
Secondary Chemistry Class X>Chapter 5 - Periodic Classification of Elements (The Periodic Table)>QUESTIONS ON HIGHER ORDER THINKING SKILLS (HOTS)>Q 8
In a period if the atomic radius of the first element is 152pm. What is the atomic radius of the third element — more than or less than 152pm?
EASY
10th CBSE
IMPORTANT
Secondary Chemistry Class X>Chapter 5 - Periodic Classification of Elements (The Periodic Table)>QUESTIONS ON HIGHER ORDER THINKING SKILLS (HOTS)>Q 9
In a group if the atomic radius, of the second element, is 152pm. What is the atomic radius of the third element — more than or less than 152pm.
EASY
10th CBSE
IMPORTANT
Secondary Chemistry Class X>Chapter 5 - Periodic Classification of Elements (The Periodic Table)>QUESTIONS ON HIGHER ORDER THINKING SKILLS (HOTS)>Q 10
What is the formula of aluminium oxide if the formula of aluminium chloride is AlCl3?
MEDIUM
10th CBSE
IMPORTANT
Secondary Chemistry Class X>Chapter 5 - Periodic Classification of Elements (The Periodic Table)>QUESTIONS ON HIGHER ORDER THINKING SKILLS (HOTS)>Q 1
Which one represents a true triad?