5. (5-6) State and explain the number of valence electrons in F

Simply F stands for Fluorine

Its atomic number is 9 .

It consists of 2 electrons on k shell and 7 on L shell .

In order to come in octate state it has to gain one electron

Hence, its valence electrons are 7.

Thank u I have just tried it It may be right in some extent and may be wrong too

no, the red giant is the hottest with 2.00.000.000 degrees celsius. while the white dwarf only 25,000 degrees celsius.