Hydrogen has three isotopes (A), (B) and (C) . If the number of neutron(s) in (A) , (B) and (C) respectively, are (x), (y) and (z), the sum of (x) , (y) and (z) is

Correct answer: A. 3 Hydrogen has three isotopes Isotopes Number of neutrons Protium ( _ 1 ^ 1 H) 0 Deutrium ( _ 1 ^ 2 H) 1 Tritium ( _ 1 ^ 3 H) 2 Hence, the sum of neutrons are 3 .

JEE Main 20208 JanuaryEvening Shift

Exam: JEE Main
Year: 2020
Date: 8 January
Shift: Evening Shift
Subject: Chemistry
Chapter: d and f Block Elements

JEE Main 2020 · 8 January · Evening Shift · Chemistry · d and f Block Elements

Hydrogen has three isotopes (A), (B) and (C) . If the number of...

Hydrogen has three isotopes

\left(A\right), \left(B\right)

and \left(C\right) .

If the number of neutron(s) in \left(A\right)

, \left(B\right)

and \left(C\right)

respectively, are \left(x\right),

\left(y\right)

and \left(z\right),

the sum of \left(x\right)

, \left(y\right)

and \left(z\right)

Options

A $3$
B $2$
C $4$
D $1$

Correct answer

A. $3$

Step-by-step solution

Hydrogen has three isotopes

Isotopes	Number of neutrons
Protium $\left({}_{1}^{1} \text{H}\right)$	$0$
Deutrium \left({}_{1}^{2} \text{H}\right) $</td> <td>$ 1 $</td> </tr> <tr> <td>Tritium \left({}_{1}^{3} \text{H}\right)$	$2$

Hence, the sum of neutrons are

3 .

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