Valence Electrons

Ga has _______ valence electrons.

Tags

NGSS.MS-PS1-1

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

• TRUE

• FALSE

Valence electrons are: 

• Electrons farthest away from the nucleus

• Electrons closest to the nucleus

• Electrons that just come and go - they don't stay with the atom

• Electrons in the second shell

When trying to identify an unknown element, a scientist determines what other elements reacts with chemically. Which property of the unknown element determines the other element it reacts with?

• The total number of neutrons in the unknown element

• The total number of particles in the nucleus of the unknown element

• The number of protons in the nucleus of the unknown element

• The number of valence electrons in the unknown element

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many valence electrons are found in atoms of group 14?

• 4

• 3

• 14

• 16

Tags

NGSS.HS-PS1-1

Which group has the greatest number of valence electrons?

• 1

• 14

• 18

• 16

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many valence electrons are found in atoms of group 15?

• 4

• 5

• 2

• 3

How many valence electrons are found in atoms of group 1?

• 7

• 6

• 4

• 1

All atoms are most stable with (or would "prefer") how many electrons in their valence shell?

• 1

• 2

• 8

• 18

How do electrons of an element determine that element's reactivity?

• If the valence shell has missing electrons it is very reactive to attract or lose more electrons.

• If the valence shell has a full ring of electrons it is very reactive because it needs more.

• If the valence shell has a full shell of electrons it is very reactive because it is already full.

• If the valence shell has missing electrons it is not reactive because it is missing electrons.