History
Periodic Trends
Element ID
Elements 1-20
Elements 20+
100

Who is the father of the periodic table?

Dmitri Mendeleev

100

How many periods are there?

7

100

How many letters are in a chemical symbol?

1 or 2

100

What element's symbol is K?

Potassium

100

What element's symbol is Lr?

Lawrencium

200

What year was the first version of the periodic table created?

1869

200

How many liquids are on the periodic table?

2

200

What does the atomic number represent?

Number of protons in the nucleus

200

How many metalloids are there in elements 1-20?

2

200

What's the symbol for Tin?

Sn

300

What is the rarest element on Earth?

Francium (87)

300

Which Nobel Gas is very bright?

Neon (10)

300

What is the order of the elements on the periodic table determined by?

atomic number

300

How many gases are there in elements 1-20?

8

300

Which metalloid is named after a country?

Germanium

400

What was the first element to be made artificially?

Technetium (43)

400

Which group is the largest?

transition metals

400

Why don't some element symbols match their English name?

Some symbols are based on the Latin name

400

Glucose is C₆H₁₂O₆. What elements is glucose made of?

Carbon, Hydrogen, Oxygen

400

Where was element 97 first discovered?

Berkeley, CA

500

What's different about elements 1-92 versus elements over 92?

1-92 are found in nature. 93+ do not exist naturally but can be created in a lab.

500

What period AND group is Antimony in?

Period 5, Nitrogen group

500

What is atomic weight measured in?

atomic mass units (amu)

500

Which element has 14 protons?

Silicon

500

Which element has a ONE letter symbol? Lead, Ruthenium, Tungsten, Platinum

Tungsten