Methane contributes towards global warming so it is called a _________________ gas.
Which of the following inert gases is placed in period 4 of the periodic table?
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....... is the property of attracting electrons by the halogen atoms in a molecule
............. elements have the largest atoms
Soft drinks contain:
........... as is used as an illuminating gas.
What is the percentage of oxygen in Al2(SO4)3?
Metals reacts with acids to give:
Elements A, B and C occur as Dobereiners triads. If the atomic mass of A is 7 and that of C is 39, what will be the atomic mass of B?
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