Advertisements
Advertisements
प्रश्न
Compare an electron and a proton in respect of mass and charge.
उत्तर
The relative mass of a proton is 1u, as the mass of the proton is almost same as that of a hydrogen atom. The relative mass of an electron is (1/1840) u, as the mass of an electron is 1/1840th of the mass of a hydrogen atom.
A proton is positively charged, whereas an electron is negatively charged.
APPEARS IN
संबंधित प्रश्न
Give the following a suitable word/phrase.
The sum of the number of protons and neutrons of an atom.
What are the two main parts of which an atom is made of?
FILL IN THE BLANK
Gases become good conductors of electricity under ........ (low/high) pressure and .............. (low/high) voltage electrical discharge.
FILL IN THE BLANK
The electrons revolving in shells close to the nucleus are called ................... electrons.
WRITE SHORT ANSWER
What is the charge on a neutron ?
ANSWER IN DETAIL
Name the three subatomic particles. How are they different from each other ?
Draw the electronic configuration of the following elements clearly stating the number of neutrons and protons in their nucleus.
a. Beryllium b. Silicon
c. Chlorine d. Aluminium
e. Nitrogen
Define the term Valence shell.
Select the correct answer from the choice in the bracket to complete the sentence:
An element ‘X’ has six electrons in its outer or valence shell. Its valency is __________.
What is meant by the term subatomic particles?
