The elements of group 1 describe, more clearly than any other group of elements, the effects of increasing the size of atoms or ions on the physical a

Question

The elements of group 1 describe, more clearly than any other group of elements, the effects of increasing the size of atoms or ions on the physical a

The elements of group 1 describe, more clearly than any other group of elements, the effects of increasing the size of atoms or ions on the physical and chemical properties.The chemical and physical properties the elements are closely related to their electronic structures and sizes.These metals are highly electropositive and thus form very strong bases, and have quite stable oxo-salts, In the manufacturing of sodium hydroxide chlorine and sodium carbonate, the sodium chloride is used as starting material.
Which of the following acts as an oxidising as well as reducing agent ?
A. `Na_2O`
B. `NaO_3`
C. `NaNO`
D. `NaNO_3`

Monjur Alahi

8 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Correct Answer - D
`NaNO_3`(sodium nitrite) acts both as oxidising agent and reducing agent because the nitrogen atom in it is in +3 oxidation state (+3 is intermediate oxidation state for nitrogen)
Oxidising property : `2NaNO_2 + 2Kl + 2H_2SO_4 to NaSO_4 +K_2SO_4 +2NO +2H_2O + I_2`
Reducing property : `NaNO_2 + H_2O_2 to NaNO_3 + H_2O`