ACP Periodic Trends

Which has the greater EN: 
Cl or Al?

• Cl
• Al

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which has the greater EN:

H or F?

• B

• F

Which periodic group has the smallest atomic radius?

• Alkali metals
• Halogens
• Noble Gases
• Transition metals

Tags

NGSS.HS-PS1-1

The element with the largest electron affinity in the halogens is -

• At

• F

• Cl

• Br

As you move down a group, atomic radius increases because - 

• you add more and more neutrons
• you add more and more protons
• you add more and more shells (energy levels)
• you add more atomic mass

As you move across the periodic table from left to right, the atomic radius decreases. This is because -

• the number of protons increases, so attraction to electrons increases

• the number of energy levels increases

• the number of electrons increases

• the atomic mass increases

The element with the smallest ionization energy is -

• Rn

• Cs

• Ba

• Pb

The energy required to remove electrons is the definition of:

• Electronegativity

• Electron Affinity

• Atomic Radius

• Ionization Energy

Electron Affinity __________ from left to right within a period and __________ from top to bottom within a group.

• decreases, increases

• increases, increases

• increases, decreases

• stays the same, increases

Which has the greater Ionization Energy:

N or C?

• C

• N