Which is an example of ionization? c + o2 mc004-1.jpg co2 h2co3 mc004-2.jpg h2o + co2 so2 + h2o mc004-3.jpg hso3– + h+ mg(oh)2 mc004-4.jpg mg2+ + 2oh–

Answer : The correct option is,

Explanation :

Ionization : It is a type of process in which the molecule obtain a negative and a positive charge by losing or gaining the electrons.

(1)

This reaction is an example of ionization in which the magnesium hydroxide ionizes into magnesium (2+) ion and hydroxide ion.

(2)

This reaction is not an example of ionization reaction. This reaction is an example of synthesis reaction in which the two or more reactants that are present in their elemental state combine to give a new product.

(3)

This reaction is not an example of ionization reaction. This reaction is an example of decomposition reaction in which the larger reactant molecule decomposes to give two or more smaller products.

(4)

This reaction is not an example of ionization reaction.

Hence, the correct option is,

the mantle

explanation:

earth is divided into three layers: the crust or the outermost layer on which we live; the underlying, middle layer - the mantle - and the core (the innermost layer of earth).

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