Atomic vs Ionic Radius

When an atom gains an electron, the size of atom

• will increase

• will decrease

• will not change

When an atom loses an electron the size of atom

• will increase

• will decrease

• will not change

Which of the following statements are true?

• For metallic elements, the ionic radius > the atomic radius

• For metallic elements, the ionic radius < the atomic radius

• For nonmetallic elements, the atomic radius > ionic radius

• For nonmetallic elements, the atomic radius < ionic radius

Cations have ionic radii that are larger than their atomic radii.

• True

• False

Anions have ionic radii that are larger than their atomic radii.

• True

• False

This circles in this diagram could represent

• Sulfur

• Potassium

• Phosphorous

• Bromine

Tags

NGSS.HS-PS1-1

Which species has the larger radius?

• Cl

• ^Cl-

Which species has the larger radius?

• Na

• Na⁺

Which is larger... P or P^3- ? … and why?

• P^3- because it gains an energy level

• P^3- due to the proton/electron ratio

• P because it loses an energy level

• P because of extra electron repulsion

Tags

NGSS.HS-PS1-1

A sodium atom (Na) loses an electron to form a sodium ion (Na⁺¹). Which statement is correct in regards to describing the ionic radius.

• The sodium ion (Na⁺¹) has a larger radius than the neutral sodium atom (Na).

• The sodium ion (Na⁺¹) has a smaller radius than the neutral sodium atom (Na).

• The sodium ion (Na⁺¹) and the neutral sodium atom (Na) are the same size because they are both sodium.

• The sodium ion (Na⁺¹) has twice the radius of the neutral sodium atom (Na).

Tags

NGSS.HS-PS1-1