structure of an atom

which are the sub-atomic particles

• protons

• neutrons

• electrons

• valency

• shells

what is capacity of the 3rd shell

define valency

What is the atomic number?

• number of protons
• number of neutrons

What number indicates the nucleus?

• 1
• 2
• 3
• 4

Tags

NGSS.HS-PS1-8

The relative mass of a proton is...

• Negligible

• 1

• 0

• -1

Who came up with the idea for the 'plum pudding' atomic structure?

• Dalton

• J.J. Thomson

• Rutherford

• Bohr

Name the region where electrons are found in an atom

• Nucleus

• Electron cloud

• Atmosphere

• Cloud

What is the electrical charge of a nucleus?

• -Ve

• +Ve

• Neutral

An electron has a _____ charge.

• negative
• positive
• neutral

Tags

NGSS.HS-PS2-4