Final answer:
The halogens family of elements has a high tendency to react by gaining 1 electron to achieve a stable octet configuration.
Step-by-step explanation:
The family of elements that has a high tendency to react by gaining 1 electron is the halogens family which is located in Group 17 of the periodic table. The halogens include elements such as fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At).
These elements have 7 valence electrons and are only 1 electron away from achieving a stable octet configuration. They have a strong affinity for gaining 1 electron to complete their octet, making them highly reactive.
For example, chlorine (Cl) can react with sodium (Na) to form sodium chloride (NaCl) by gaining 1 electron from sodium.
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