Question

Match the element with its description.

Sodium A) Nonreactive gas
Silicon B) Has properties of both metals and nonmetals
Bromine C) Highly reactive gas
Argon D) Malleable, soft, and shiny

Answer 1

c-sodium
b-silicon
d-bromine
a-argon

Answer 2

Answer: Sodium: D) Malleable, soft, and shiny

Silicon: B) Has properties of both metals and nonmetals

Bromine: C) Highly reactive gas

Argon: A) Nonreactive gas

Explanation: Sodium is a metal as it can lose it's valence electron easily so as to attain stable configuration.

`Na:11:1s^22s^22p^63s^1`

Metals are soft, malleable and shiny.

Silicon is a metalloid which has characteristics between those of metals and non metals. It has 4 valence electrons thus it can neither easily lose like metals nor easily gain like non metals.

`Si:14:1s^22s^22p^63s^23p^2`

Bromine is a gas which is very reactive as it only needs one electron to attain stable electron configuration.

`Br:35:1s^22s^22p^63s^23p^63d^(10)4s^24p^5`

Argon is a noble gas which is non reactive as it has stable configuration and thus neither lose nor gain electrons.

`Ar:18:1s^22s^22p^63s^23p^6`