the chemical element of atomic number 2, an inert gas that is the lightest member of the noble gas series.
What is the definition of Helium
100
Oxygen
What element do you use to breath?
100
Copper
What is the symbol Cu?
100
54
What is the amount of electrons in Xenon
100
Transition metals
What group is Cobalt in?
200
the chemical element of atomic number 30, a silvery-white metal that is a constituent of brass and is used for coating (galvanizing) iron and steel to protect against corrosion.
verb.
What is the definition of Zinc
200
Lithium
What element do you use for some batteries?
200
Fluroine
What is the symbol F?
200
78
What is the amount of electrons in Platinum?
200
Metalloids
What group is Silicon in?
300
the chemical element of atomic number 5, a nonmetallic solid.
What is the definition of Boron?
300
Potassium
What element is used in fertilizer compounds?
300
Sodium
What is the symbol Na?
300
79
What is the amount of electrons in Gold?
300
Noble Gases
What group is Krypton in?
400
a precious shiny grayish-white metal, the chemical element of atomic number 47.
What is the definition of Silver?
400
Helium
What element do you use to inflate balloons?
400
Calcium
What is the symbol Ca?
400
47
What is the amount of electrons in Silver?
400
Alkaline earth metals
What group is Calcium in?
500
the chemical element of atomic number 10, an inert gaseous element of the noble gas group. It is obtained by the distillation of liquid air and is used in fluorescent lamps and advertising signs.
What is the definition of Neon?
500
Gold
What element is are used for fillings, crowns, bridges, and orthodontic appliances?