Advertisements
Advertisements
प्रश्न
Give the formula and valency of:
cupric ………………… .
उत्तर
Cupric
Formula Cu
Valency +2
APPEARS IN
संबंधित प्रश्न
Write the chemical formula of the Copper nitrate.
The radius of an oxygen atom is 0.073 nm. What does the symbol ‘nm’ represent ?
Write down the formulae for the following compounds :
Calcium oxide
Work out the formula for sulphur dioxide. (Valencies : S = 4 ; O = 2)
Fill in the blank:
Formula of iron (ill) carbonate is _____ .
Identify the following substance:
A brown gas D with the irritating smell.
Write the formula of the following compound:
Sodium sulphite
Write the formula of the following compound:
Sodium bicarbonate
Write the formula of the following compound:
Sodium nitrite
Write the formula of the following compound:
Zinc nitrate
Write the formula of the following compound:
Aluminium carbonate
Write the formula of the following compound:
Aluminium hydroxide
Write the formula of the following compound:
Copper [I] sulphide
Write the formula of the following compound:
Copper [II] nitrate
Write the formula of the following compound:
Iron [III] oxide
Write the formula of the following compound:
Iron [III] sulphide
Write the formula of the following compound:
Lead [II] sulphate
Write the molecular formulae for the following compounds
Aluminium (III) nitrate
Write the molecular formulae of all the compounds that can be formed by the combination of the following ions
Cu2+, Na+, Fe3+, C1– , `"SO"_4^-2`, `"PO"_4^3-`
Play a game for writing formula.
Example 1: Make placards with symbols and valencies of the elements separately. Each student should hold two placards, one with the symbol in the right hand and the other with the valency in the left hand. Keeping the symbols in place, students should criss-cross their valencies to form the formula of a compound.