Exploring Periodic Trends: Atomic Radius, Ionization Energy, and Electronegativity

The video tutorial covers three main periodic trends: atomic radius, ionization energy, and electronegativity. It explains how atomic radius is measured and how it varies across the periodic table, increasing from top to bottom and decreasing from left to right. Ionization energy, the energy required to remove an electron, increases across a period and decreases down a group. Electronegativity, the ability of an atom to attract electrons, follows a similar trend to ionization energy, increasing across a period and decreasing down a group. The tutorial emphasizes the role of atomic size and metallic character in these trends.

What is the atomic radius?

• The distance from the center of the atom to the outer edge

• The distance between two atoms

• The distance between the nucleus and the outermost electron

• The distance from the nucleus to the first electron

How is atomic radius measured in chemistry?

• By measuring the distance from the nucleus to the first electron

• By measuring the distance between two different elements

• By measuring the distance between the nuclei of two atoms of the same element

• By measuring the distance from the nucleus to the outer edge

What is the trend of atomic radius as you move down a group in the periodic table?

• It increases

• It decreases

• It remains the same

• It fluctuates

What happens to the atomic radius as you move from left to right across a period?

• It increases

• It decreases

• It fluctuates

• It remains the same

What is ionization energy?

• The energy required to form a bond

• The energy required to break a bond

• The energy required to remove an electron

• The energy required to add an electron

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Which group of elements has the highest ionization energy?

• Group 1

• Group 2

• Group 17

• Group 18

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What is the trend of ionization energy as you move down a group?

• It increases

• It decreases

• It remains the same

• It fluctuates

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What is electronegativity?

• The ability of an atom to form bonds

• The ability of an atom to attract electrons

• The ability of an atom to lose electrons

• The ability of an atom to break bonds

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Which element has the highest electronegativity?

• Neon

• Francium

• Helium

• Fluorine

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What is the trend of electronegativity as you move from left to right across a period?

• It increases

• It fluctuates

• It decreases

• It remains the same

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