Question

What is electronic configuration of hydrogen and helium

Answer 1

Step-by-step explanation:

`hydrogen \: \: \: 1 {s}^(1) \\ helium \: \: \: 1 {s}^(2)`

Hope it helps ;))

Answer 2

Step-by-step explanation:

Atomic number of hydrogen is 1 as it is the very first element of periodic table.

Hence, electronic configuration of hydrogen is
`1s^(1)`.

On the other hand, second element of the periodic table is helium and its atomic number is 2. Helium is also known as a noble gas.

Therefore, electronic configuration of helium is
`1s^(2)`.

Thus, we can conclude that electronic configuration of hydrogen and helium is
`1s^(1)` and
`1s^(2)`.