MEDIUM
10th Chhattisgarh Board
IMPORTANT
Earn 100

Name the two elements whose atomic weights were corrected by Mendeleev.

Important Questions on Periodic Classification of Elements

EASY
10th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-10>Chapter 4 - Periodic Classification of Elements>Questions>Q 5
Why were inert gases placed in a separate group? Write the reasons.
EASY
10th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-10>Chapter 4 - Periodic Classification of Elements>Exercise 1>Q 1
Lithium, Beryllium, Boron, Carbon and Nitrogen are placed in a same period. Can you tell the number of period to which they belong?
EASY
10th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-10>Chapter 4 - Periodic Classification of Elements>Exercise 1>Q 2
Can you tell how many elements will be present in the third period?
EASY
10th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-10>Chapter 4 - Periodic Classification of Elements>Questions>Q 1
According to the modern periodic table the properties of an element are a periodic function of what?
EASY
10th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-10>Chapter 4 - Periodic Classification of Elements>Questions>Q 2

What will be the number of elements in the second period?

EASY
10th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-10>Chapter 4 - Periodic Classification of Elements>Questions>Q 3

Can you fix the position of different isotopes of an element in the modern periodic table? Explain.

EASY
10th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-10>Chapter 4 - Periodic Classification of Elements>Questions>Q 4
How have the positions of argon and potassium been determined in the modern periodic table?
EASY
10th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-10>Chapter 4 - Periodic Classification of Elements>Questions>Q 5
If the atomic number of three elements X, Y and Z are 6, 10 and 18 respectively then, Which of the two elements belong to the same group?