Advertisements
Advertisements
प्रश्न
Calculate the number of neutrons, protons and electrons:
- atomic number 3 and mass number 7
- atomic number 92 and mass number 238.
Advertisements
उत्तर
- Number of neutrons – 4
Number of protons – 3
Number of electrons – 3 - Number of neutrons – 146
Number of protons – 92
Number of electrons – 92
APPEARS IN
संबंधित प्रश्न
Helium atom has an atomic mass of 4 u and two protons in its nucleus. How many neutrons does it have?
A neutron is formed by an electron and a proton combining together. Therefore, it is neutral.
The mass of an electron is about `1/2000` times that of proton.
Fill in the blank of the following statement :
The subatomic particle not present in a hydrogen atom is ________
State the number of neutrons in each of the atoms A to E. Also state which of the atoms A to E is a metal.
On the basis of Rutherford’s model of an atom, which subatomic particle is present in the nucleus of an atom?
Calculate the number of neutrons present in the nucleus of an element X which is represented as `""_15^31"X"`
What is the charge of a neutron?
Write the properties of neutrons.
Which subatomic particles have no charge?
