(1) When does the nucleus of an atom become radio active (2) How is t

1.	(1) When does the nucleus of an atom become radio active (2) How is the radioactivity of an element affected when it undergoes a chemical change to form a chemical compound? (3) Name the product of nuclear fission which is utilized to bring about further fission of 235 92U.
Answer» 1. Nucleus of an atom become radioactive if n/p ratio is more than 1.5 i.e., number of neutrons are much more than number of protons in the nucleus Electrostatic force is “more than nuclear force. 2. No change (:. Any physical or chemical change do not alter the rate of disintegration of radioactive substance). 3. Slow moving neutron.

(1) When does the nucleus of an atom become radio active (2) How is the radioactivity of an element affected when it undergoes a chemical change to form a chemical compound? (3) Name the product of nuclear fission which is utilized to bring about further fission of 235 92U.

Answer»

1. Nucleus of an atom become radioactive if

n/p ratio is more than 1.5 i.e., number of neutrons are much more than number of protons in the nucleus

Electrostatic force is “more than nuclear force.

2. No change (:. Any physical or chemical change do not alter the rate of disintegration of radioactive substance).

3. Slow moving neutron.

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(1) When does the nucleus of an atom become radio active (2) How is the radioactivity of an element affected when it undergoes a chemical change to form a chemical compound? (3) Name the product of nuclear fission which is utilized to bring about further fission of 235 92U.

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