How many valence electrons does Na have?

• 1

• 5

• 6

• 11

Tags

NGSS.MS-PS1-1

Chlorine ( Cl) has _________ valence electrons.

• 3

• 5

• 7

• 8

Tags

NGSS.MS-PS1-1

Ga has _______ valence electrons.

Tags

NGSS.MS-PS1-1

Select the elements that has 8 valence electrons.

• Ne

• Br

• Kr

• Xe

What is the chemical symbol for Potassium?

• Po

• P

• K

• Pm

TRUE OR FALSE Lithium and Beryllium have the same number of valence electron.

• TRUE

• FALSE

Tags

NGSS.MS-PS1-1

All of the elements has 4 valence electrons EXCEPT______

• Carbon

• Silicon

• Germanium

• Selenium

The atomic mass of Titanium is 48 and its proton is 22, therefore its number of neutron is ________

• 22

• 24

• 26

• 70

Tags

NGSS.MS-PS1-1

Valence electrons plays a key role in chemical reactions and it increases from left to right of the periodic table.

• TRUE

• FALSE

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2