Unit 4 Review over Periodic Table and Trends

As you move ______ a group, more energy levels are added, which increases the size of the atom

• down

• up

• diagonal

• away

Tags

NGSS.MS-PS1-1

Which element's atom is larger? Nitrogen or Phosphorus?

• Nitrogen

• Phosphorus

Tags

NGSS.MS-PS1-1

Which element's atom is the smallest?

• Rhodium

• Silver

• Cadmium

• Tin

Which of these best explains the reasoning behind the trend that as you go across a period, size decreases?

• As you go across a period, more energy levels are added, which shrinks the atom.

• The added electrons in the nucleus give the atom a negative charge, which shrinks the atom.

• The added protons in the nucleus pull the electrons closer to them, which shrinks the atom.

• All of the above

Which order is correct from largest to smallest atomic radius?

• Thallium, Indium, Gallium, Boron

• Boron, Thallium, Indium, Gallium

• Boron, Gallium, Indium, Thallium

• Thallium, Gallium, Indium, Boron

What is ionization energy?

• Energy required to remove an electron
• Energy needed to split an electron
• Energy required to add an electron

Tags

NGSS.HS-PS1-2

Select ALL that explain the ionization energy trend within periods going left to right

• electrons are closer to the nucleus

• their is a weak pull between electrons from the nucleus, making them easily moveable

• feel more of a pull from nucleus, making them harder to move

• electrons are further from the nucleus

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Ionization energy __________ as you go down a group.

• stays the same

• decreases

• increases

Which element has the greater ionization energy?

• Magnesium (Mg)

• Phosphorus (P)

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which element has the greater ionization energy?

• Iodine (I)

• Chlorine (Cl)

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2