Category: Structure of an atom

Isobars

Question 1 What are isobars? Question 2 Give example? Isobars Isobars are the atoms of different elements having different atomic number but same mass number....

Isotopes

Question 1 What are isotopes? Question 2 Give examples of isotopes? Question 3 Give few application of isotopes? Question 4 why isotopes have same chemical...

valency

Question 1 Define atomic number? Question 2 Define mass number? Question 3 Define valency? Question 4 What are valence electrons? Question 5 What are noble...

Arrangement of electrons in the atoms

Arrangement of electrons in the atoms 1)The energy levels of electrons are denoted by the numbers 1,2,3,4… and shells are represented by K,L,M,N….. 2)The arrangement...

Bohr’s model of an atom

Question 1 Describe Bohr’s model of an atom? Question 2 How did Neil Bohr’s explain the stability of atom? Question 3 Why is an atom...

Rutherford model of an atom

Question 1 Name the particle used by Rutherford in his experiment to determine the structure of an atom? Question 2 Explain the Rutherford’s scattering experiment?...

J.J. Thomson model of an atom

Question 1 Describe Thomson’s model of an atom? Question 2 Which subatomic particle was not present in¬†Thomson’s model of an atom? Question 3 Why Thomson’s...

Discovery of neutron

Question 1 Name the scientist who discovered neutrons? Question 2 Which subatomic particle is not present in an ordinary hydrogen atom? Question 3 What is...

Discovery of proton

Question 1 Name the positively charged particles present in the atoms of all elements? Question 2 What is a proton? Question 3 State relative mass...

Discovery of electron

Question 1 Name the scientist who discovered electrons? Question 2 What are cathode rays? Question 3 what is the nature of charge on cathode rays?...

Structure of an atom

Question 1 Name the building blocks of matter? Question 2 Name the subatomic particles in atoms? Question 3 Give an example to show that there...