Atomic Avengers
Bonding Battles
Periodic Pioneers
Group Quest
Mystery Metals & More
100

Element name of: Co

Cobalt

100

Element name of:V

Vanadium

100

Element name of:B

Boron

100

Element name of:Ne

Neon

100

Element name of:Br

Bromine

200

Chemical symbol of: Lead

Pb

200

Chemical symbol of: Silver

Ag

200

Chemical symbol of:Argon

Ar

200

Chemical symbol of: Potassium

K

200

Chemical symbol of: Sodium

Na

300

True or False:Gold has the chemical symbol Au. 

True

300

True or False: The periodic table shows only elements, not compounds. 

False

300

True or False: Helium is a noble gas. 

True

300

True or False: Nitrogen is not an element.

False 

300

Who developed the modern periodic table of elements?

Dmitri Mendeleev