Answer:
The energy of the electron in a helium ion is [tex]-5.44\times10^{-19}\ J[/tex]
Explanation:
Given that,
Charge = +1
Value of n = 4
Suppose [tex]k=2.179\times10^{-18}\ J[/tex]
We need to calculate the energy of the electron in a helium ion
Using formula of energy
[tex]E_{n}=-k\dfrac{z^2}{n^2}[/tex]
Put the value into the formula
[tex]E_{n}=-2.179\times10^{-18}\times\dfrac{2^2}{4^2}[/tex]
[tex]E_{n}=-5.44\times10^{-19}\ J[/tex]
Hence, The energy of the electron in a helium ion is [tex]-5.44\times10^{-19}\ J[/tex]
