Electron cannot be a part of nucleus but...

Electron cannot be a part of nucleus but protons can be. Why?

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To understand why electrons cannot be a part of the nucleus while protons can, we need to analyze the properties of both particles in relation to their wavelengths and the size of the nucleus. ### Step-by-Step Solution: 1. **Understanding the Nucleus**: The nucleus of an atom is a very small, dense region at the center of the atom, primarily composed of protons and neutrons. The size of the nucleus is typically on the order of \(10^{-15}\) meters (1 femtometer). 2. **De Broglie Wavelength**: ...

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Assertion (A) : Nucleus of the atom does not contain electrons, yet it emits beta- particles in the form of electrons. Reason (R): In the nucleus , protons and neutrons exchange mesons frequently.

If both `(A)` and `(R)` are correct , and `(R)` is the correct explanation of `(A)`

If both `(A)` and `(R)` are correct, but (R) is not the correct explanation of `(A)`

If `(A)` is correct, but `(R)` is incorrect.

If `(A)` is incorrect, but `(R)` is correct.

Assertion (A) : Nucleus of the atom does not contain electrons,yet it ewmits beta -particles in the form electrons Reason (R ) : In the nucleus, protons and neutrons exchange mesons frequently

If both (A) and (R ) are correct, and (R ) is the correct explaination of (A)

If both (A) and (R ) are correct, but (R ) is not the correct explaination of (A)

If (A) is correct,but (R ) is incorrect

If both (A) and (R ) are incorrect.

A positron is emitted by radioactive nucleus of proton no 90 . The product nucleus will have proton number

`91`

`90`

`89`

`88`