Its easy that moderators that see this answer can think that my answer isn't without explanation.
• Type of atom C (Carbon)
C = 1
• Type of atom H (Hydrogen)
H = 4
You dont understand? JUST SEE THE FORMULA C MEANS ONLY HAVE 1 CARBON ATOM AND H4 MEANS 4 ATOM OF HYDROGEN
oK. have a nice day hope you understands
