Question

The nonmetals include which of the following groups? Use the periodic table to answer the question. Check all that apply. halogens , alkali metals,lanthanides ,noble gases, alkaline, earth metals.

Answer 1

Answer is: halogens ans noble gases.

The nonmetals are divided into two categories: reactive nonmetals and noble gases.

Halogen elements are in group 17: fluorine (F), chlorine (Cl), bromine (Br) and iodine (I). They are very reactive and easily form many compounds.

Noble gases are in group 18: helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe) and radon (Rn). They have very low chemical reactivity.

Answer 2

2 correct answer and they are:

1) halogens

2) noble gases

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