Enlist the main uses of nitrogen.
(N/A) $1$. In the manufacturing of $NH_3$ and industrial chemicals such as calcium cyanamide $(CaCN_2)$.
$2$. In the iron and steel industry to maintain an inert atmosphere.
$3$. As an inert diluent for reactive chemicals.
$4$. Liquid nitrogen is used as a refrigerant to preserve biological materials,food items,and in cryosurgery.
$2$. In the iron and steel industry to maintain an inert atmosphere.
$3$. As an inert diluent for reactive chemicals.
$4$. Liquid nitrogen is used as a refrigerant to preserve biological materials,food items,and in cryosurgery.
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View SolutionGiven below are the two statements: one is labeled as Assertion $(A)$ and the other is labeled as Reason $(R)$.
Assertion $(A)$: There is a considerable increase in covalent radius from $N$ to $P$. However,from $As$ to $Bi$,only a small increase in covalent radius is observed.
Reason $(R)$: Covalent and ionic radii in a particular oxidation state increase down the group.
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Assertion $(A)$: There is a considerable increase in covalent radius from $N$ to $P$. However,from $As$ to $Bi$,only a small increase in covalent radius is observed.
Reason $(R)$: Covalent and ionic radii in a particular oxidation state increase down the group.
In the light of the above statements,choose the most appropriate answer from the options given below:
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