Exploring the Periodic Table

Who is credited with creating the first periodic table?

• Albert Einstein

• Isaac Newton

• Dmitri Mendeleev

• Marie Curie

What year was the periodic table first published?

• 1869

• 1875

• 1901

• 1850

What are the vertical columns in the periodic table called?

• Rows

• Groups

• Periods

• Sections

How many periods are there in the modern periodic table?

• 7

• 10

• 12

• 5

Which group of elements is known as the alkali metals?

• Transition metals: iron, copper, nickel

• Noble gases: helium, neon, argon

• Group 1 elements: lithium, sodium, potassium, rubidium, cesium, francium.

• Group 2 elements: beryllium, magnesium, calcium

What is the main characteristic of nonmetals?

• Nonmetals are excellent conductors of heat and electricity.

• Nonmetals are generally poor conductors of heat and electricity.

• Nonmetals are usually found in solid form at room temperature.

• Nonmetals are typically shiny and malleable.

Which elements are considered metalloids?

• Carbon

• Iron

• Oxygen

• Boron, silicon, germanium, arsenic, antimony, tellurium

What trend is observed in atomic radius across a period?

• The atomic radius increases across a period.

• The atomic radius decreases across a period.

• The atomic radius fluctuates randomly across a period.

• The atomic radius remains constant across a period.

How does electronegativity change down a group?

• Electronegativity increases down a group.

• Electronegativity remains constant down a group.

• Electronegativity fluctuates randomly down a group.

• Electronegativity decreases down a group.

What is the electron configuration of oxygen?

• 1s² 2s² 2p²

• 1s² 2s² 2p⁵

• 1s² 2s² 2p³

• 1s² 2s² 2p⁴