Metals
Non-Metals
Metalloids
Characteristics
Atomic Numbers
100

What is the element Mg?

Magnesium. 

100

What is the element O?

Oxygen.

100

What is the element B?

Boron

100

What elements is liquid at ordinary temperatures, reddish-brown, and evaporates easily at room temperature?

Bromine (Br)

100

What is the atomic number of Nitrogen (N)

7

200

That is the element K?

Potassium.

200

What is the element Br?

Bromine?

200

What is the element Si?

Silicon.
200

Which element is silvery-white, low melting, and a metal soft enough to be easily cut with a knife. 

Potassium (K)

200

What is the atomic number of Rubidium (Rb)

37

300
What is the element Hg?

Mercury.

300

What is the element S?

Sulfur.

300

That is the element Ge?

Germanium.

300

Which element is a soft, pale yellow, odorless, brittle solid. It is insoluble in water, but soluble in carbon disulfide.

Sulfur (S)

300

What is the atomic number Gold (Au)

79

400

What is the element Au?

Gold.

400

What is the element Ar?

Argon.

400

What is the element As?

Arsenic.

400

Which element is a very hard, dense, silvery-white, lustrous metal that tarnishes in air, forming a protective oxide coating?

Tungsten (W)

400

What is the atomic number of Tin (Sn)

50

500

What is the element W.

Tungsten.

500

What is the element P?

Phosphorus.

500

What is the element Sb.

Antimony

500

Which element is a highly reactive, waxy, white-yellow, transparent solid with acrid fumes.

Phosphorus (P) 

500

What is the atomic number of Mercury (Hg)

80

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