Write symbols of the following elements and the radicals obtained from them and indicate the charge on the radicals.

Mercury, potassium, nitrogen, copper, sulphur, carbon, chlorine, oxygen

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Solution

Element
Symbols Free radicals

1. Mercury Hg Mercurous- Hg⁺

2. Potassium K Potassium- K⁺

3. Nitrogen N Azide- N₃^-
Nitrate- NO₃^-
Nitrite-NO₂^-

4. Copper Cu Cuprous- Cu⁺

5. Sulphur S Sulphide- S^_2-
Sulphate- SO₄^2-
Sulphite- SO₃^2-

6. Carbon C Carbide-C^-,triple carbene(:CH₂)

7. Chlorine Cl Chloride- Cl^-

8. Oxygen O Oxide- O^2-

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Copper, Sulphur, Aluminium, Oxygen, Silicon, Nitrogen, Germanium, Mercury, Chlorine, and Sodium.

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Element	Symbols	Free radicals
1. Mercury	Hg	Mercurous- Hg⁺
2. Potassium	K	Potassium- K⁺
3. Nitrogen	N	Azide- N₃^- Nitrate- NO₃^- Nitrite-NO₂^-
4. Copper	Cu	Cuprous- Cu⁺
5. Sulphur	S	Sulphide- S^_2- Sulphate- SO₄^2- Sulphite- SO₃^2-
6. Carbon	C	Carbide-C^-,triple carbene(:CH₂)
7. Chlorine	Cl	Chloride- Cl^-
8. Oxygen	O	Oxide- O^2-