Question

Argon, neon, and xenon are examples of _________. A) halogens B) metalloids C) noble gases D) alkali metals

Answer 1

Answer:

Argon, neon and xenon are examples of noble gases.

C is correct option.

Explanation:

According to electronic configuration

Argon:

The atomic number of argon is 18.

The electronic configuration of argon

Ar= 2,8,8

$Ar = 1s^2,2s^22p^6,3s^23p^6$

Neon:

The atomic number of argon is 10.

The electronic configuration of argon

Ar= 2,8

$Ne = 1s^2,2s^22p^6$

Xenon:

The atomic number of argon is 54.

The electronic configuration of argon

Ar= 2,8,18,18,8

$Ne = 1s^2,2s^22p^6,3s^23p^6 3d^{10},4s^24p^6 4d^{10},5s^2 5p^6$

Argon, neon and xenon are examples of noble gases because the last shell is completely filled and they does not participate in any reaction so, these atoms are called noble gasses.

Hence, Argon, neon and xenon are examples of noble gases.

Answer 2

C) Noble gases! They are all in the last column of the periodic table!