Mass of electron and neutron are the same.

True

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False

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Solution

The correct option is B False
Electron
An electron is a negatively charged particle. The mass of an electron is about $\frac{1}{1837}$ times that of a hydrogen atom.
So the mass of an electron is negligible.
Neutron
Neutrons do not carry any electrical charge. The mass of a neutron is almost equal to that of a proton.
Thus, the mass of a neutron is taken as one atomic unit.
Therefore, the given statement is false.

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Question 07

Two atoms are said to be isobars if ?

(a) They have same atomic number but different mass number

(b) They have same number of electrons but different number of neutrons

(d) Sum of the number of protons and neutrons is same but the number of protons is different

1) are mass number and neutron number the same ?

2)are atomic masses and neutron number the same ?

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