1.

Atoms are complicated than hydrogen have more than one proton in their nucleus. Let z stands for the number of protons in a nucleus. Also imagine that an atom loses all but one of its electrons so that it changes into a positively charged ion with just one electron. Bohr.s formula for the energy levels of the hydrogen atom can easily be changed to apply to such ions The potential energy of electron in the ground state of He^(+) ion is

Answer»

`4.358 XX 1^(-18)` J/atom
`-7.112 xx 1^(-18)` J/atom
`-1.743 xx 1^(-17)` J/atom
`-8.716 xx 1^(-18)` J/atom

Answer :C


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