Check Your Periodicity

Which has the GREATER electronegativity?

• Ag

• P

Tags

NGSS.HS-PS1-1

Which has the LARGER radius?

• F

• Br

Tags

NGSS.HS-PS1-1

Which atom has the LOWER ionization energy?

• Al

• Cl

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

When Z_eff increases, the nucleus attraction

towards electrons become

• Weaker

• Stronger

• Remain the same

Across a period from left to right , atomic radius

• decreases

• increases

• increases, then decreases

• decreases, then increases

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Going down the group, the atomic radius of elements increases. Why is that so?

• the number of shell (n) increases

• Shielding effect increases

• Nucleus attraction towards valence electrons weaker

• All of the above

Tags

NGSS.HS-PS1-1

Down the group, the first ionisation energy (IE₁) .....

• increases

• decreases

• Remain the same

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Across the period, the electronegativity .....

• decreases

• increases

• remain the same

• increases, then decreases

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the tendency of an atom to attract electrons towards itself?

• atomic radius

• ionization energy

• shielding

• Electronegativity

Which is larger... P or P^3- ?

• P^3- because it gains an energy level
• P^3- due to extra electron repulsion
• P because it loses an energy level
• P because of extra electron repulsion

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2