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प्रश्न
State true of false. If false, give the correct statement.
Atoms cannot exist alone. They can only exist as groups called molecules.
पर्याय
True
False
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उत्तर
Atoms cannot exist alone. They can only exist as groups called molecules- True
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संबंधित प्रश्न
Write the molecular formulae of Iron (II) sulphide :
Write the cations and anions present, if any, in the following :
- CH3COONa
- NaCl
- H2
- NH4NO3
Fill in the following blanks :
1 mole contains .............. atoms, molecules or ions of a substance.
If 1 gram of sulphur dioxide contains x molecules, how many molecules will be present in 1 gram of oxygen ?
(S = 32 u ; O = 16 u)
What is the number of electrons donated by a magnesium atom and number of electrons accepted by a sulphur atom during their chemical combination?
What is the number of electrons after the transfer of electrons in magnesium and sulphur atoms.
Fill in the blank:
The formula of aluminium sulphate is _________.
Name the following:
The compound formed when iron [Fe2+] combines with oxygen [O2−].
Name the following:
A non-metal which forms a polyatomic molecule with more than three atoms.
How many atoms are present in a PO4 3– ion?
