Chemistry
Mention three gaseous elements and write their molecular formulae.
Related Questions
State the number of atoms of each element, present in
(a) C6H12O6
(b) H2SO4
(c) HNO3
(d) CaCO3
Also name these compounds.
Why are symbols and formulae of substances important?
State the information obtained from the formula of a compound.
Gold is used to make jewellery because it is:
- dull
- lustrous and attractive
- highly reactive
- very cheap