Question

How many atoms of fluorine are present in the molecule of cf4?

Answer 1

 The number of atoms  of  fluorine  that are present  in the  molecules of CF4  is calculated as follows

 1 x4 = 4 atoms  of  fluorine

in CF4  they are  four  atoms of  fluorine  since the  subscribe   4  indicate that  they are  four atoms  of fluorine