Periodic Table/PNE

Just Balanced

100

The sum of the number of protons and neutrons in an atom.

Mass Number

200

The region of the atom containing protons and neutrons.

Nucleus

300

In a neutral atom, the number of electrons must equal the number of these particles.

Protons

400

The element with an atomic number of 17.

Chlorine

500

The term used to describe two elements, such as neon (Ne) and argon (Ar), that are in the same column on the periodic table.

Group

Same but Different

100

The particles that differ in number between two isotopes of the same element.

Neutron

200

An atom of carbon with a mass number of 12 has this many neutrons.

6

300

An atom of magnesium with 13 neutrons has a mass number of this.

25

400

An atom of phosphorous with a mass number of 31 has this many neutrons.

16

500

An atom of potassium-40 has this many neutrons.

21

Electron Thieves

100

An atom that has gained or lost one or more electrons, resulting in a charge.

Ion

200

Metals lose electrons, resulting in this net charge.

Positive

300

Non-metals gain electrons, resulting in this net charge.

Negative

400

This is the element symbol for a sulfur ion.

S^2-

500

This is the element symbol for a ytrium ion.

Y³⁺

Periodic Table

100

A one or two letter abbreviation for an element, such as "H" for hydrogen.

Element symbol

200

The total number of protons can be found by looking at this number in the element square.

Atomic number

300

The number in the top right corner of the element square gives us this information.

Ion charge

400

This type of element is found in the far right column of the periodic table.

Noble gas

500

Metals can be described as being found in this location of the periodic table.

Left and center

ID Me

100

This element is atomic number 45.

Rhodium

200

This element has 81 protons.

Thallium

300

Zirconium fits into this category of elements.

Metal

400

There are this many noble gases.

6

500

Tellurium fits into this category of elements.

Non-metal