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

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

• Ar
• He
• Kr
• Rn

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

• Gallium
• Aluminum
• Magnesium
• Strontium

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

The more protons there are, the  ____ .

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

What is the atomic radius?

• The distance from the nucleus to the valence electrons

• The distance from one side of an atom to the other side

• The distance around the atom

• The distance between atoms in the gas phase

• The distance between atoms in the solid phase

Why is iodine larger than bromine?

• iodine has a greater number of electrons than bromine

• iodine has a greater number of protons than bromine

• iodine has more occupied energy levels than bromine

• iodine has more neutrons than bromine

• iodine has more valence electrons than bromine

Tags

NGSS.HS-PS1-1

How many valence electrons does Nitrogen Have?

• 1 Valence electron

• 2 Valence electrons

• 7 Valence electrons

• 5 Valence electrons

• 15 Valence electrons

Tags

NGSS.HS-PS1-1

How many valence electrons does Potassium Have?

• 1 Valence electron

• 2 Valence electrons

• 3 Valence electrons

• 8 Valence electrons

Tags

NGSS.HS-PS1-1

What is a valence electron?

• an electron that is found in the outermost shell of an atom. 
• an electron found in the innermost shell of an atom.
• an electron found in the middle shell.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2