Chemistry Midterm Review

What are valence electrons?

• sum of the protons and neutrons
• protons minus electrons
• electrons in the inner shells
• electrons in the outer shell

What are the vertical columns on the periodic table called?

• groups

• periods

• protons

• valence electrons

The period for Bromine is ___________.

• 3
• 2
• 4

Beryllium is in group number______.

• Group 2
• Group 3
• Group 4
• Group 7

The majority of elements on the periodic table are

• man made.
• nonmetals.
• metals.
• gases.

What are valence electrons?

• Electrons in the outermost energy level.

• Electrons closest to the nucleus.

• Electrons that identify the atom as that of a particular element.

• Electrons that release photons and move from a higher to lower energy level.

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

• 2

• 8

• 6

• 18

How many valence electrons does Argon have

• 8

• 11

How many valence electrons does Magnesium Have?

• 1 Valence electron

• 2 Valence electron

• 3 Valence electron

• 4 Valence electron

• 5 Valence electron

How many valence electrons does Aluminum Have?

• 1 Valence electron

• 2 Valence electron

• 3 Valence electron

• 4 Valence electron

• 5 Valence electron