Identify an element on the periodic table that is chemically similar to boron (B)

Aluminium, Indium and Gallium, Thallium  

Explanation:

Chemical similarities exists between elements found within the same periodic groups because they all have the same valency.

The valency of elements determines their chemical properties as we journey up or down the periodic table.

It is norm and widely accepted assertion that elements in the same groups have the same chemical properties.

The oxidation state of group III elements is usually the +3 state and this makes them stable.

All elements in this group will behave the same way chemically.

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.

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