In writing the formula for a salt the symbol of the cation is first then the anion is written second .
The charge on Calcium is +2. Since, Calcium oxide is a neutral compound, so the charge on Oxygen should be -2. <span>Valency of Oxygen is 2, so a single Oxygen atom can satisfy the need.
Therefore, formula is CaO.</span>
Answer:
9
Explanation:
a significant number is a non zero number or exponent or a zero between numbers
Answer:
Explanation: Bromine, the dark red color disappears quickly as the atoms of bromine bond with the atoms of carbon in the double bond.
Alkane have the empirical formula of c3h8