Question

19.
the elements in group 7a (group 17) of the periodic table are called the

a) halogens.

b) alkali metals.

c) alkaline earth metals.

d) noble gases.

Explanation:

Identify the periodic table group name

Group 17 (7A) elements: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At).

Match group with options

• Group 17 (7A) = halogens
• Group 1 = alkali metals
• Group 2 = alkaline earth metals
• Group 18 = noble gases

Answer:

• (A) halogens. (Correct answer)
• (B) alkali metals.
• (C) alkaline earth metals.
• (D) noble gases.