Periodic Properties Unveiled: Trends in Atomic Radii Ionization Energy Electron Affinity and Electronegativity

The video tutorial covers periodic properties in chemistry, focusing on atomic radii, ionization energy, electron affinity, and electronegativity. It explains how these properties vary across periods and groups in the periodic table, highlighting trends and exceptions. The tutorial emphasizes the importance of understanding these properties for predicting element behavior.

What is the primary basis for the arrangement of elements in the modern periodic table?

• Increasing atomic mass

• Increasing atomic number

• Decreasing atomic number

• Decreasing atomic mass

How does atomic radii change as you move from left to right across a period?

• It decreases

• It fluctuates

• It remains constant

• It increases

What happens to atomic radii as you move down a group in the periodic table?

• It increases

• It fluctuates

• It remains constant

• It decreases

What is ionization energy?

• Energy released when an electron is added

• Energy released when an electron is removed

• Energy required to remove an electron

• Energy required to add an electron

How does ionization energy change across a period from left to right?

• It remains constant

• It decreases

• It fluctuates

• It increases

Why is the second ionization energy greater than the first?

• Because it is easier to remove an electron from a positive ion

• Because it is more difficult to remove an electron from a positive ion

• Because the atom is smaller

• Because the atom is larger

What is electron affinity?

• Energy released when an electron is removed

• Energy required to remove an electron

• Energy released when an electron is added

• Energy required to add an electron

Which element has the highest electron affinity?

• Chlorine

• Fluorine

• Oxygen

• Nitrogen

What is electronegativity?

• The ability of an atom to gain electrons

• The ability of an atom to lose electrons

• The ability of an atom to attract shared electrons

• The ability of an atom to donate electrons

Which element is the most electronegative in the periodic table?

• Chlorine

• Oxygen

• Fluorine

• Nitrogen