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Abundance and Isotopes

Which of the ...

Question

Which of the following consists of one electron, one proton and zero neutron ?

A

_{1} H^{2}

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B

_{1} H^{1}

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C

_{1} H^{3}

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D

_{2} H e^{4}

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Solution

The correct option is B $_{1} H^{1}$
$_{1} H^{1}$ consists of one electron, one proton and zero neutron.
Number of electrons $=$ number of protons $=$ atomic number $= 1$
Number of neutrons $=$ Mass number $-$ atomic number $= 1 - 1 = 0$

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Similar questions

10^{40}

deuterons. It produces energy via the process

_{1} H^{2} +_{1} H^{2} \to_{1} H^{3} +_{1} H^{1}

_{1} H^{2} +_{1} H^{3} \to_{2} H e^{4} +_{0} n^{1}

If the average power radiated by the star is

10^{16}

W, then the deuteron supply of the star is exhausted in a time of the order of :

Q. The energy released in the reaction

_{1} H^{2} +_{1} H^{3}

\to_{2} H e^{4} +_{0} n^{1}

- ------- -

_{0} n^{1} = 1.00867 a m u

_{1} H^{2} = 2.01410 a m u

_{1} H^{3} = 3.0160 a m u

_{2} H e^{4} = 4.0026 a m u

Q. Assuming that about 20 MeV of energy is released per fusion reaction,

_{1} H^{2} +

_{1} H^{3}

⟶

_{0} n^{1} +

_{2} H e^{4} .

then the mass of

1_{H}^{1}

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(_{1} H^{2})

(_{1} H^{3})

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(_{1} H^{1})

(_{1} H^{2})

, singly ionised Helium

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