Periodic Trends

How does atomic radius change going down a group? (top to bottom)

• increasing

• decreasing

• stays the same

How does atomic radius change going across a period? (left to right)

• increasing

• decreasing

• stays the same

Arrange the following in order of INCREASING atomic radius: K, Se, Kr, Zn

• Kr, Se, Zn, K

• K, Zn, Se, Kr

• Kr, Zn, Se, K

• K, Se, Zn, Kr

Tags

NGSS.HS-PS1-1

Arrange the following in order of DECREASING atomic radius: Pt, At, Ba, W

• At, Pt, W, Ba

• Ba, W, Pt, At

• Ba, Pt, W, At

• At, W, Pt, Ba

Arrange the following in order of INCREASING atomic radius: Br, At, Cl, F

• F, Br, Cl, At

• At, Cl, Br, F

• At, Br, Cl, F

• F, Cl, Br, At

Tags

NGSS.HS-PS1-1

Which is larger? Ba or Sr?

• Ba

• Sr

• They are equal

Tags

NGSS.HS-PS1-1

Which is smaller? Al or Te?

• Al

• Te

• They are the same

The energy required to take an electron away from an atom is called

• electronegativity energy

• electron affinity energy

• ionization energy

• coulombic attraction energy

Which group would have the lowest ionization energy?

• Group 2

• Group 18

• Group 1

• Group 7

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which group would have very high ionization energy?

• Group 17

• Group 16

• Group 1

• Group 2

Tags

NGSS.HS-PS1-1