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The maximum sum of the number of neutrons and protons in an isotope of hydrogen is

$(a)\;6\qquad(b)\;5\qquad(c)\;4\qquad(d)\;3$

1 Answer

Tritium have 1 proton and 2 neutron in it nucleus.It is maximum and it is 3.Also called mass number.
Hence (d) is the correct answer.
answered Jan 10, 2014 by sreemathi.v
edited Sep 21 by meena.p
 

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