Electrons & Periodic Trends Review

Valence electrons are the electrons in:

• the lowest energy level

• the highest energy level

• in all the energy levels combined.

The ____ gives the nucleus its positive charge.

• photons

• protons

• neutron

• electron

Aluminum has ___ valence electrons.

• 1

• 3

• 13

• 27

In a Bohr structure, how many electrons are in the first energy level for Lithium?

• 1

• 2

• 3

• 4

In a Bohr structure, how many electrons are in the third energy level for Sodium?

• 1

• 2

• 8

• 11

Tags

NGSS.MS-PS1-1

How many Lewis dots are drawn for Argon?

• 40

• 18

• 10

• 8

How many Lewis dots are drawn for Lithium?

• 7

• 6

• 3

• 1

Sodium and Francium are a part of which family on the periodic table?

• Alkaline Earth Metals

• Boron Group

• Carbon Group

• Alkali Metals

As you move from left to right across the second period of the periodic table:

• Atomic mass decreases

• Atomic radius increases

• Electronegativity decreases

• Ionization energy increases

Tags

NGSS.HS-PS1-1

The periodic trend shown above is the _________________.

• Atomic radius

• Ionic radius

• Electronegativity

• Ionization Energy

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2