Ionization Energy Insights in the Periodic Table

The video tutorial explains ionization energy, its measurement in the gaseous state, and the differences between first, second, and third ionization energies. It covers factors affecting ionization energy, such as atomic radius and nuclear charge, and discusses periodic trends in ionization energy across periods and down groups.

What is the ionization energy of magnesium in kilojoules per mole?

• 700 kJ/mol

• 738 kJ/mol

• 1450 kJ/mol

• 7732 kJ/mol

Why is ionization energy measured in the gaseous state?

• Because atoms are more stable in gaseous state

• To avoid incorrect values due to bonding

• Gaseous state requires less energy

• It is easier to measure in gaseous state

What does the first ionization energy of an atom indicate?

• The energy needed to remove the second electron

• The energy needed to break a bond

• The energy needed to remove the outermost electron

• The energy needed to add an electron

Why is the second ionization energy always greater than the first?

• Because the atom is in a higher energy state

• Due to increased nuclear attraction in a unipositive ion

• Due to decreased nuclear attraction

• Because the atom has more electrons

What does ionization energy indicate about an atom?

• Its stability and valency

• Its atomic mass

• Its color

• Its melting point

How does atomic radius affect ionization energy?

• Larger radius means lower ionization energy

• Smaller radius means lower ionization energy

• Larger radius means higher ionization energy

• Radius has no effect on ionization energy

What is the relationship between nuclear charge and ionization energy?

• Fluctuating relationship

• No relationship

• Inverse relationship

• Direct relationship

Which orbital requires the highest ionization energy to remove an electron?

• P orbital

• S orbital

• D orbital

• F orbital

What happens to ionization energy as you move down a group in the periodic table?

• It fluctuates

• It decreases

• It remains constant

• It increases

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

• It remains constant

• It fluctuates

• It decreases

• It increases