Among I-A elements which can form ionic as well as covalent bonds?
A
Hydrogen
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B
Cerium
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C
Helium
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D
Sodium
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Solution
The correct option is A Hydrogen Hydrogen is the lightest element on the periodic table. Hydrogen forms covalent compounds with non metals. In ionic compounds hydrogen can take the form of negative charge when it is known as hydride or a cation.