GK
NUCLEAR SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The ratio of neutrons to protons of an element having a mass number and atomic number of 80 and 40 respectively is
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1
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2
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3
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4
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Explanation:
Detailed explanation-1: -The ratio of neutrons to protons in a stable nucleus is thus around 1:1 for small nuclei (Z < 20). The ratio increases slowly with atomic number up to about 1.58 at high Z.
Detailed explanation-2: -Mass number of X=40, therefore, Number of neutrons = 40 – 18 = 22. Q.
Detailed explanation-3: -To find the number of neutrons, subtract the number of protons from the mass number. number of neutrons=40−19=21.
Detailed explanation-4: -An element with mass number 81 contains 31.7% more neutrons as compared to protons. Assign the atomic symbol. The element is bromine. The atomic symbol is 8135Br.
There is 1 question to complete.