Short Answer Type

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Give a reason for the following:

Ionisation potential increases across a period, from left to right.


From left to right in the periodic table, atomic size decreases smaller the size more the effective nuclear charge. Therefore more energy is required to remove an electron from an atom, therefore, ionization potential increases.


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Give a reason for the following:

Inert gases do not form ions.


What do you understand by a lone pair of electrons?


Name the gas that is produced in the following cases:

A reaction of ethanol and sodium.


Give a reason for the following:

The conductivity of dilute hydrochloric acid is greater than that of acetic acid.


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Name the gas that is produced in the following cases:

The action of dilute hydrochloride acid on sodium sulphide.


Name the gas that is produced in the following cases:

Sulphur is oxidized by concentrated nitric acid.


Name the gas that is produced in the following cases:

At the anode during the electrolysis of acidified water.


Name the gas that is produced in the following cases:

Action of cold and dilute nitric acid on copper.


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Give a reason for the following:

Alkali metals are good reducing agents.