Beryllium, Gallium, Palladium, Tellurium, Thallium.
The symbol L for a chemical element doesn't exist.
lips
Iron
Snowflakes can be described as lightweight. The adjective begins with the letter l.
· La Plama (Canary Islands) · Lascar (Chile) · Longonot (Kenya)
Lion
There are two countries that start with the letter "I" with 4 letters. Iran and Iraq
teal
Ponce de Leon
One possibility is punch bowl.
Eel.
luminous?
· Luxembourg
linsey - thin coarse blend of linen and wool
Laurel.
Inert.
Here is one: "Letters" L-1 e-2 t-3 t-4 e-5 r-6 s-7