Subatomic
Numbers
Symbols
Electronic Configuration
100

Three subatomic particles.

What are protons, neutrons, and electrons?

100

The number of protons in an atom of a certain element.

atomic number?

100

What is the symbol of Hydrogen?

H

100

This atom has an electronic configuration of 1

Hydrogen

200
Located outside of the nucleus and have a negative charge.
What are electrons?
200
The atomic number of Oxygen.
What is 8?
200

What is the symbol of Neon?

Ne

200

This atom has an electronic configuration of 2, 8, 1

Sodium

300
Located inside of the nucleus and have a positive charge.
What are protons?
300

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

mass number?

300

This atom has symbol Na

Sodium

300

State the electronic configuration of Li

2,1

400
Neutrons are located outside of the nucleus. True or False?
False!
400
Mass number - atomic number = ______ __ ________.
What is the numer of neutrons?
400

What is the symbol of atom with atomic number 12?

Mg

400

State the symbol atom with electronic configuration 2,8,8

Ar

500
Electrons are located outside of the nucleus. True or False?
True!
500

The mass number of Potassium.

39

500

What is symbol of atom with atomic number 19?

K

500

State electronic configuration of calcium

2,8,8,2

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