What is the charge an alkali metal acquires when they involve in a reaction? 

The correct answer is: +1

• In the periodic table there are 118 elements arranged in 18 groups and 7 periods.
• The first group elements are called the alkali metals.
• Alkali metals have one electron in their outermost shell, losing that electron they attain noble gas configuration.
• Hence, the charge an alkali metal acquires when they involve in a reaction is +1.