Periodic Table & Trends

What is the trend in metallic character as you move across a period?

• Metallic character increases.

• Metallic character decreases.

• Metallic character remains the same.

• Metallic character fluctuates.

Explain the term 'isotopes'.

• Atoms of the same element with different numbers of protons.

• Atoms of the same element with different numbers of neutrons.

• Atoms of different elements with the same number of neutrons.

• Atoms that have the same mass but different charges.

What is the relationship between atomic radius and ionization energy?

• As atomic radius increases, ionization energy decreases.

• As atomic radius increases, ionization energy increases.

• There is no relationship between atomic radius and ionization energy.

• As atomic radius decreases, ionization energy remains constant.

What are the vertical columns in the Periodic Table called?

• Rows

• Groups

• Periods

• Blocks

Define 'valence electrons'.

• Electrons in the outermost shell of an atom that are involved in chemical bonding.

• Electrons that are found in the nucleus of an atom.

• Electrons that are responsible for the mass of an atom.

• Electrons that are always in pairs within an atom.

What is the trend in electronegativity as you move across a period?

• Electronegativity decreases.

• Electronegativity remains constant.

• Electronegativity increases.

• Electronegativity fluctuates.

Why does Francium (Fr) have the lowest ionization energy in Group 1?

• Its 1 valence electron is very far from the nucleus, so little energy is needed to remove it.

• It has a high nuclear charge that holds the electron tightly.

• It has more protons than other elements in Group 1, making it harder to remove an electron.

• Its electron configuration is stable, requiring more energy to remove an electron.

How does the atomic mass change as you move down a group?

• Atomic mass generally decreases.

• Atomic mass remains constant.

• Atomic mass generally increases.

• Atomic mass fluctuates randomly.

What is the Modern Periodic Table of Elements arranged by?

• Atomic mass

• Atomic number

• Molecular weight

• Density

What trend is observed in ionization energy as you move down a group in the periodic table?

• Ionization energy increases.

• Ionization energy remains constant.

• Ionization energy decreases.

• Ionization energy fluctuates.