EASY
10th Bihar Board
IMPORTANT
Earn 100

A) What do you mean by valency?

B) Write the valency of magnesium.

Important Questions on Periodic Classification of Elements

EASY
10th Bihar Board
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 5 - Periodic Classification of Elements>Bihar Board-2020>Q 7
According to modern periodic law, properties of elements are a periodic function of their 
EASY
10th Bihar Board
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SCIENCE>Chapter 5 - Periodic Classification of Elements>Bihar Board-2020>Q 8

The horizontal rows of modern periodic table are known as which of the following?