Exploring the Modern Periodic Table

What are the main groups of the modern periodic table?

• Alkali metals, Alkaline earth metals, Transition metals, Halogens, Noble gases

• Lanthanides

• Metalloids

• Actinides

Which group contains the noble gases?

• Group 1

• Group 3

• Group 18

• Group 14

What is the significance of the alkali metals in the periodic table?

• Alkali metals are known for their low melting points only.

• Alkali metals are non-reactive and stable under normal conditions.

• Alkali metals are significant for their reactivity, ability to form strong bases, and role in various chemical processes.

• Alkali metals are primarily used in jewelry making.

How does atomic radius change across a period?

• The atomic radius increases across a period.

• The atomic radius remains constant across a period.

• The atomic radius fluctuates randomly across a period.

• The atomic radius decreases across a period.

What trend is observed in electronegativity as you move down a group?

• Electronegativity decreases as you move down a group.

• Electronegativity fluctuates randomly as you move down a group.

• Electronegativity increases as you move down a group.

• Electronegativity remains constant as you move down a group.

What is the electron configuration for oxygen?

• 1s² 2s² 2p⁴

• 1s² 2s² 2p⁶

• 1s² 2s² 2p³

• 1s² 2s² 2p²

How do you determine the number of valence electrons in an element?

• The number of valence electrons is the same for all elements in the same period.

• Valence electrons can be calculated using the element's electron affinity.

• The number of valence electrons is determined by the group number of the element in the periodic table.

• The number of valence electrons is determined by the atomic mass of the element.

What is the trend in ionization energy across a period?

• Ionization energy decreases across a period.

• Ionization energy remains constant across a period.

• Ionization energy fluctuates randomly across a period.

• Ionization energy increases across a period.

Which elements are considered transition metals?

• Iron, copper, nickel, zinc, silver, gold, and other elements in groups 3 to 12.

• Lithium, sodium, potassium

• Helium, neon, argon

• Carbon, nitrogen, oxygen

How does the reactivity of halogens change down the group?

• The reactivity of halogens remains constant down the group.

• The reactivity of halogens increases down the group.

• The reactivity of halogens fluctuates down the group.

• The reactivity of halogens decreases down the group.