Atoms and Electron Dots

According to the octet rule most elements need _______ valence electrons.

• 2

• 8

• 6

• 18

How many electrons does potassium K contain? (click to see image)

• 19

• 39

• 20

• 40

Tags

NGSS.MS-PS1-1

What element is represented in this Bohr Model?

• Carbon

• Hydrogen

• Aluminum

• Lithium

Tags

NGSS.MS-PS1-1

In an electron dot diagram, what do the dots around the symbol represent?

• electrons

• valence electrons

• protons

• protons and neutrons

The particle in the atom that has a negative charge is called?

• electron

• proton

• neutron

• megatron

The area outside the nucleus where a particle moves around is called?

• electron cloud

• nucleus

• electron space

• orbital space

The number of electrons in the outer energy level is referred to as?

• valence electrons

• outer electrons

• electron cloud

• orbital shells

• 2
• 8
• 3
• 13

Tags

NGSS.HS-PS1-1

How many valence electrons does Helium Have?

• 1 Valence electron

• 2 Valence electron

• 3 Valence electron

• 4 Valence electron

• 5 Valence electron

Is this the correct Lewis Dot Structure for Boron that has abbreviated Bohr model 2-3?

• Yes

• No, missing electrons

• No, too many electrons

• No, dots are in wrong place.