please help me, thank you in advance :)
Have a great day/night <3
(There's 4 questions)

Match the element with its description.

Elements:

1. Fluorine
2. Lithium
3. Krypton
4. Lead



descriptions:

a. Malleable, soft, and shiny
b. Opaque solid with higher density
c. Highly reactive gas
d. Nonreactive gas