Periodic Trends: Why

What term is used to describe "A measure of the size of an atom from the nucleus to the outer most energy level"

• chemical reactivity

• atomic radius

• energy levels

• orbit

Why does Ba have the largest Atomic Radius of all of the Group 2 Alkaline Earth Metals?

• Ba has more mass

• Ba has more protons

• Ba is the lower on the table

• Ba has the most occupied energy levels in the electron cloud

Tags

NGSS.HS-PS1-1

As you look at Group 1 on the periodic table (i.e. column #1, H to Cs), the atoms toward the bottom of the table are bigger than those at the top. This is because ____________.

• The atoms have more mass

• The atoms have more protons

• The atoms toward the bottom have more occupied energy levels in their electron cloud

• The atoms are lower on the Periodic Table

Tags

NGSS.HS-PS1-1

Why does Ne have the smallest Atomic Radius of the atoms in Period 2 (i.e. row #2, from Li to Ne)?

• Ne has more mass

• Ne has more electrons

• Ne is farther right on the Periodic Table

• Ne has more protons in the nucleus that attract the electron cloud

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

As you look at Period 3 on the periodic table the atoms toward the right are smaller than those on the left. This is because ______________.

• the atoms have more mass

• the atoms have less mass

• the atoms on the right have more protons in their nuclei that attract the electron cloud

• the atoms are farther right on the Periodic Table

Tags

NGSS.HS-PS1-1

What term is used to describe "The energy required to remove an electron from gaseous atoms"

• excitation energy
• ionization energy
• polarization energy
• electrolytic energy 

Why does Fluorine have the highest Ionization Energy of the atoms from Group 7 (the Halogens)?

• F has the least mass

• F is the highest Halogen on the Periodic Table

• F has the least protons

• F has the least energy levels

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

As you look at Group 8 on the periodic table (from top to bottom), the Ionization Energy decreases. This is because ____________.

• The atoms have more mass

• The atoms have more protons

• The atoms have more energy levels

• The atoms are lower on the Periodic Table

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Why does Kr have the largest/highest/greatest Ionization Energy of the atoms in Period 4?

• Kr is farther right on the Periodic Table

• Kr has the most mass

• Kr has the most energy levels

• Kr has the most protons attracting

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

As you look at Period 3 on the periodic table (from left to right), the Ionization Energy tends to increase because, ______________.

• the atoms have more mass

• the atoms have less mass

• the atoms have more protons attracting

• the atoms are farther right on the Periodic Table

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2