Question

1. halogens react easily with elements in family 1 like ______
2. whenever halogens bound with the elements in family 1 they form a ______
3. family 18 are non metals and have ______ valence electrons, except helium
4. ______ are also called inert gases.

Explanation:

Question 34

Family 1 elements are alkali metals like sodium (Na), potassium (K), lithium (Li), etc. Halogens (group 17) react readily with alkali metals. A common example is sodium (Na).

Halogens (group 17, non - metals) and alkali metals (group 1, metals) react to form ionic compounds called salts. For example, sodium chloride (NaCl) is formed when sodium (alkali metal) reacts with chlorine (halogen).

Family 18 elements are noble gases. Except for helium (which has 2 valence electrons), noble gases have 8 valence electrons, which gives them a stable electron configuration.

Answer:

sodium (or lithium, potassium, etc. - alkali metals)

Question 35