In $β$ -emission from a radioactive substance, an electron is ejected. This electron comes from:

the outermost orbit of atom

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the inner orbits of atom

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the surface of substance

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the nucleus of atom

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Solution

The correct option is D the nucleus of atom
In $β$ -emission from a radioactive substance, an electron is ejected. This electron comes from the nucleus of atom.
Beta particles are subatomic particles ejected from the nucleus of some radioactive atoms. They are equivalent to electrons. The difference is that beta particles originate in the nucleus and electrons originate outside the nucleus.

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Similar questions

Q. In

β

-emission from a radioactive substance, an electron is ejected from:

Q. Statement I: Lithium needs lesser energy to knock off an electron from its outermost orbit than Helium.
Statement II: Lithium has 1 electron in its outermost orbit which is loosely bound due to the repulsion of the inner orbit electrons and less attraction from the nucleus.

Statement I: Lithium needs less energy to knock off an electron from its outermost orbit than Helium.
Statement II: Lithium has 1 electron in its outermost orbit which is loosely bonded to the nucleus, due to the repulsion of the electrons present in the inner orbit and located at a greater distance from the nucleus.

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e^{+} +_{Z}^{A} X \to_{Z - 1}^{A} Y + v

Show that if

β^{+}

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Q. A hydrogen-like an atom has its single electron orbiting around its stationary nucleus. The energy to excite the electron from the second Bohr orbit to the third Bohr orbit is

47.2 e V

. The atomic number of this nucleus is ______.

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In β-emission from a radioactive substance, an electron is ejected. This electron comes from:

In $β$ -emission from a radioactive substance, an electron is ejected. This electron comes from: