The type of reaction is decomposition reaction.
The other product is barium chloride BaCl₂
The number of electrons in barium's outer shell is 2.
The type of reaction that that is occurring is decomposition reaction. The other product formed along with oxygen molecule is barium chloride.
The chemical equation can be represented as follows:
Ba(ClO₃)₂ → BaCl₂ + 3O₂
From the reaction above Barium chlorate decompose to form Barium chloride and 3 moles of oxygen molecules.
Base on the subscripts of the elements in the product BaCl₂, it shows barium has 2 electron in the outer shell/valency electrons.
It gives 2 of this outer electron to the 2 atoms of chlorine. Each chlorine atom takes each of the given electron from barium to fulfil the octet rule.
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