Answer:
Explanation:
atomicity is the number of atoms in a molecule of a gas.
metalloid is an element that has both metallic and nonmetallic properties, as arsenic, silicon, or boron.
isotopes is members of a family of an element that all have the same number of protons but different numbers of neutrons.
Elements in the same group in the periodic table have similar chemical properties. Hydrogen and Lithium, who both belong to alkali metal group, have the same chemical properties.
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Answer: Option (d) is the correct answer.
Explanation:
An oxidizing agent is a specie which accepts electrons and gets reduced in a chemical reaction.
In the given reaction,
Oxidation state of Al changes from 0 to +3, therefore, it is reducing agent. Whereas oxidation state of Br is changing from -2 to -3 this means Br is gaining electrons, therefore, it is an oxidizing agent.
Thus, we can conclude that the statement is the oxidizing agent because its oxidation number decreases.