EASY
9th ICSE
IMPORTANT
Earn 100

Nucleus of an atom is positively charged and electrons around it are negatively charged, then why do electrons not just fall to the nucleus out of attraction?

Important Questions on Atomic Structure and Chemical Bonding

EASY
9th ICSE
IMPORTANT
All In One ICSE Chemistry>Chapter 4 - Atomic Structure and Chemical Bonding>CHECK POINT 01>Q 5
What do you understand by the term 'discrete orbit'?
EASY
9th ICSE
IMPORTANT
All In One ICSE Chemistry>Chapter 4 - Atomic Structure and Chemical Bonding>CHECK POINT 01>Q 6
Draw a sketch of Bohr's model of an atom with four shells.
EASY
9th ICSE
IMPORTANT
All In One ICSE Chemistry>Chapter 4 - Atomic Structure and Chemical Bonding>CHECK POINT 02>Q 1
How can you denote the atomic number of any element?
EASY
9th ICSE
IMPORTANT
All In One ICSE Chemistry>Chapter 4 - Atomic Structure and Chemical Bonding>CHECK POINT 02>Q 2
What do you understand by mass number?
EASY
9th ICSE
IMPORTANT
All In One ICSE Chemistry>Chapter 4 - Atomic Structure and Chemical Bonding>CHECK POINT 02>Q 3
What can be the maximum number of electrons in the outermost orbit?
EASY
9th ICSE
IMPORTANT
All In One ICSE Chemistry>Chapter 4 - Atomic Structure and Chemical Bonding>CHECK POINT 02>Q 4
Find out the number of electrons present in last shell of an atom having atomic number 15.
MEDIUM
9th ICSE
IMPORTANT
All In One ICSE Chemistry>Chapter 4 - Atomic Structure and Chemical Bonding>CHECK POINT 02>Q 5
In an atom first four shells (K, L, M and N) are completely filled, then what is the total number of electrons in that atom?
EASY
9th ICSE
IMPORTANT
All In One ICSE Chemistry>Chapter 4 - Atomic Structure and Chemical Bonding>CHECK POINT 02>Q 6
A non-metal has six electrons in its outermost shell. Predict its valency.