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(a) Name two metals that are found in nature mainly in the free state (as metallic elements). (b) Name two metals that are always found in a combined state. (c) What iron compound is present in hematite ore? Also, write its chemical formula.

Vinay

Solution:

(a) Gold and platinum are mostly found in the free state in nature.

(b) Sodium and Magnesium are almost always found together.

(c) Iron (III) oxide; haematite ore contains Fe2O3.