Periodic Trends

As you move down the periodic table atoms get bigger.  This is because ____________.

• The atoms have more mass.
• The atoms have more protons.
• The atoms have more energy levels
• The atoms have more nuetrons

Tags

NGSS.HS-PS1-1

Order the following in increasing atomic radii: 
Ra, Be, Ca, Rb, H

• Ra, Be, Rb, H, Ca
• Rb, H, Ca, Be, Ra
• Ra, Rb, Ca, Be, H
• H, Be, Ca, Rb, Ra

Tags

NGSS.HS-PS1-1

As you move across the periodic table from left to right, the atomic radius decreases.  This is because - 

• the number of protons increases, so attraction to electrons increases
• the number of energy levels increases
• the number of electrons increases
• the atomic mass increases

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

The atom with the largest atomic radius in Period 4 (row 4) is - 

• K
• Kr
• Fe
• Fe

Tags

NGSS.HS-PS1-1

Which periodic group has the smallest atomic radius?

• Alkali metals
• Halogens
• Noble Gases
• Transition metals

Tags

NGSS.HS-PS1-1

Which of the following will have a larger radius than Zinc?

• Gallium

• Aluminum

• Magnesium

• Strontium

Tags

NGSS.HS-PS1-1

Which of the following atoms has the greatest atomic radius?

• nitrogen

• phosphorus

• potassium

• cesium

Which group has "zero" electronegativity?

• Transition Metals

• Alkali Metals

• Noble Gases

• Halogens

Which element has the smallest electronegativity?

• Ru

• Cs

• Ge

• N

Electronegativity __________ from left to right within a period and __________ from top to bottom within a group.

• decreases, increases

• increases, increases

• increases, decreases

• stays the same, increases

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2