Formula bonding and nomenclature questions | form two Chemistry

State the valency of the following atoms:
(i) Aluminium (ii) Neon
(iii) Sulphur (iv) Potassium

Answer / Solution

UNSOLVED

Give the chemical formula for the combination of the following sets of ions:
(i) Mg ²⁺ , PO ₄^3-
ii) Fe ³⁺ ,SO ₄^2-

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UNSOLVED

Find the oxidation number of each of the underlined elements in the following:

1. KClO₃
2. Cr₂O₇^2-
    

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UNSOLVED

Use the IUPAC system to name each of the following chemical compounds:
(i) CuO
(ii) CaSO₄
(iii) HNO₃
(iv) ZnCl₂

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UNSOLVED

Substance X liberates chlorine gas from acidified potassium chloride. The behaviour of X is described as

1. an oxidising agent
2. an oxidising and reducing agent
3. catalyst
4. a reducing agent
5. bleaching agent.

Answer / Solution