(3) loses one electron and becomes positively charged
Lithium has one valence electron and Bromine has seven. Therefore Lithium will give up its one to Bromine for both to have an octet
<h3>Answer:</h3>
Oxidation number refers to a number given to an atom which shows the number of number of electrons lost (or gained, if the number is negative), by an atom of that element in the compound.
Hence oxidation number of following atoms in given reaction are:
In NaOH:
Na = +1
O = -2
H = +1
In H2:
H = 0
Answer: 1
The first chemical reaction mentioned above represents a single replacement reaction; a reaction in which only one element is substituted by another element.
The second reaction shows a decomposition reaction; a reaction in which a compound is broken down into two more elements.
