Understanding Ionic Radius and Periodic Trends

What is the charge of a cation?

• Variable

• Neutral

• Positive

• Negative

When an atom becomes a cation, what happens to its electrons?

• It gains electrons

• It loses electrons

• It gains protons

• The electrons remain the same

What happens to the electron configuration of an atom when it becomes an anion?

• It remains unchanged

• It loses electrons

• It loses protons

• It gains electrons

Which of the following has the largest ionic radius?

• Anion

• Cation

• Proton

• Neutral atom

Which of the following ions would be the smallest in size?

• Anion with a -2 charge

• Cation with a +3 charge

• Neutral atom

• Anion with a -1 charge

Which of the following statements is true about cations?

• They are smaller than their neutral atoms

• They have more electrons than their neutral atoms

• They have the same size as their neutral atoms

• They are larger than their neutral atoms

What does the term 'isoelectronic' mean?

• Same number of electrons

• Same number of protons

• Same number of neutrons

• Same atomic mass

In a group of isoelectronic species, which factor determines the size of the ion?

• Number of protons

• Number of neutrons

• Magnitude of charge

• Atomic mass

How does the ionic radius change as you move down a column in the periodic table?

• It fluctuates

• It remains constant

• It increases

• It decreases

In the context of ionic radius, what is the significance of the periodic trend?

• It helps calculate atomic mass

• It helps identify isotopes

• It helps determine the size of ions

• It helps predict the reactivity of elements