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प्रश्न
Fill in the blank:
A molecule of an element is _________.
उत्तर
A molecule of an element is chorine.
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संबंधित प्रश्न
Write the molecular formulae of Sodiun sulphide:
Write the molecular formulae of Hydrogen chloride :
Write the molecular formulae of Iron (II) sulphide :
The valency of sodium is one, write the molecular formula for sodium sulphate ?
The valency of sodium is one, write the molecular formula for sodium carbonate ?
Fill in the blank
_______ is a triatomic molecule.
In hydrogen peroxide (H2O2), the proportion of hydrogen and oxygen by mass is :
Write the cations and anions present, if any, in the following :
- CH3COONa
- NaCl
- H2
- NH4NO3
Calculate the number of molecules present in a drop of chloroform (CHCl3) weighing 0.0239 g.
(Atomic masses : C = 12 u ; H = 1 u ; Cl = 35.5 u)
State true of false. If false, give the correct statement.
Atoms cannot exist alone. They can only exist as groups called molecules.
Calculate the number of water molecules present in one drop of water which weighs 0.18 g.
How many atoms are present in a PO4 3– ion?
How many atoms are present in a `PO_4^(3-)` ion?
Express each of the following in kilograms
58.34 g
Express each of the following in kilograms
58.34 g
Express each of the following in kilograms
5.873×10−21g
Compute the number of ions present in 5.85 g of sodium chloride
______ can be formed by the same or different kinds of atoms.
______ of an element consist of a fixed number of different types of atom.
