The total number of electrons in a nitrogen atom and chlorine atom is 7 and 17 respectively. Find the number of valence electrons in them
The number of valence electrons in the atoms of carbon, nitrogen and oxygen respectively are __________.
(a) What are valence electrons? Where are valence electrons situated in an atom ?
(b) What is the number of valence electrons in the atoms of an element having atomic number 13 ? Name the valence shell of this atom.