2.5 - Atomic Radius

Which atom has the largest atomic radius?

• potassium

• rubidium

• francium

• cesium

Tags

NGSS.HS-PS1-1

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

As you move across the periodic table atoms tend to get smaller because, ______________.

• the atoms have more mass.
• the atoms have less mass
• the atoms have more protons.
• the atoms have less electrons.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

The atom with the largest atomic radius in Group 18 is - 

• Ar
• He
• Kr
• Rn

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

an atom lose electron is

• Cation

• Anion

• Isotope

• compound

An atom gain electron

• Cation

• Anion

• Positive ion

• Isotope

when atom gain an electron (negative) the size of atom

• Increase

• Decrease

• No change

• Small

when atom lose an electron (Positive) the size of atom

• Will be great

• Increase

• No change

• Will be small

The more protons there are, the  ____ .

• Weaker the pull
• Smaller the electrons
• Stronger the pull
• The bigger the electrons

Tags

NGSS.MS-PS1-1