Trends

Which of the following groups contains the most active metals?

• group 1

• group 2

• group 17

• group 18

Tags

NGSS.HS-PS1-1

In the alkali metals, which element has a larger atomic radius?

• lithium, Li

• sodium, Na

• potassium, K

• cesium, Cs

Tags

NGSS.HS-PS1-1

In the halogen family, which element is the most electronegative?

• iodine, I

• fluorine, F

• chlorine, Cl

• helium, He

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Looking at period 3, which element has the smallest atomic radius?

• Mg

• Cl

• Al

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

As you move across a period, what happens to the nuclear charge in the atoms?

• It increases because more protons are added.

• It decreases because protons are taken away.

• It stays the same.

Tags

NGSS.HS-PS1-8

In group 2, which of these elements has the largest atomic radius?

• Ba

• Mg

• Ca

• La

Tags

NGSS.HS-PS1-1

Which of the following elements is the most electronegative?

• Hydrogen, H

• Aluminum, Al

• Oxygen, O

• Cesium, Cs

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

As you move across a period, what happens to the nuclear charge in the atoms?

• It increases because more protons are added.

• It decreases because protons are taken away.

• It stays the same.

What is the trend in atomic radius as you move down a group in the periodic table?

• It increases due to the addition of electron shells.

• It decreases due to increased nuclear charge.

• It remains constant.

• It first increases, then decreases.

Which trend is observed in ionization energy as you move across a period from left to right?

• It increases due to stronger nuclear attraction.

• It decreases due to weaker nuclear attraction.

• It remains constant.

• It fluctuates randomly.