Advertisements
Advertisements
प्रश्न
What are the two main parts of which an atom is made of?
उत्तर
- The centrally located nucleus
- The outer circular orbits.
APPEARS IN
संबंधित प्रश्न
Fill in the blank
Neutrons are .......................... particles having mass equal to that of protons.
Give the following a suitable word/phrase
The sub-atomic particle with negative charge and negligible mass.
Multiple Choice Questions
The outermost shell of an atom is known as
Mention briefly the salient features of Dalton’s atomic theory (five points)
FILL IN THE BLANK
The electrons revolving in shells close to the nucleus are called ................... electrons.
Tick the most appropriate answer.
How many times is a proton heavier than an electron?
- 1500
- 1800
- 1840
- none of these
Name the negatively charged particle present in the atoms of all the elements.
Compare a proton and a neutron in respect of mass and charge.
The particle not present in an ordinary hydrogen atom is :
Define the term Valence shell.
