Answer:
[tex](_{1} ^ {1}\textrm{H})[/tex] is the correct choice that is option A.
Explanation:
An electron has [tex]\frac{1}{1836}[/tex] times the mass of a proton, but an equal and opposite negative charge.
Lets [tex]_{A}^{Z}\textrm{X}[/tex] is any element represented here.
Where [tex]Z[/tex] is the number of protons as well as its atomic number.
And
[tex]A[/tex] is the mass number which is the number of protons and neutrons in any atom.
Note: We know that Hydrogen [tex](_{1} ^ {1}\textrm{H})[/tex] is devoid of neutron,so number of neutrons in a Hydrogen atom is zero.
Then
[tex](_{1} ^ {1}\textrm{H})[/tex] is also a representation of single proton.
So [tex](_{1} ^ {1}\textrm{H})[/tex] is the right choice that is option A.
