Question

On the basis of electronic configuration, how will you identify the first and the last element of a period ?


don't spam ​

Answer 1

Answer:

According to the atomic number, we get electronic configuration.

Answer 2

If the number of valence electron is 1 then the element is said to be the first element of a period, If the number of valence electrons are 8, the element is said to be the last element of a period.

hello Pehal

ki haal ae thoda