Advertisements
Advertisements
Question
Calculate the number of neutrons present in the nucleus of an element X which is represented as `""_15^31"X"`
Advertisements
Solution
""_15^31"X"` number of protons = number of electrons = 15
Number of neutrons =Mass number – no. of protons
= 31 – 15
= 16
APPEARS IN
RELATED QUESTIONS
A neutron is formed by an electron and a proton combining together. Therefore, it is neutral.
What is a neutron? State its relative mass and charge.
Write down the number of neutrons in the nucleus of an atom having atomic number 17 and mass number 37.
Explain in brief the experimental proof which led to the discovery of –
Neutrons
Calculate the number of neutrons, protons and electrons:
- atomic number 3 and mass number 7
- atomic number 92 and mass number 238.
On the basis of Rutherford’s model of an atom, which subatomic particle is present in the nucleus of an atom?
What is the charge of a neutron?
The hydrogen atom does not have ______.
Which subatomic particles have no charge?
α, β, γ rays are during the ratio active decay ______ of an atom.
