Modern Periodic Table Quiz

What is the primary basis for the arrangement of elements in the modern periodic table?

• Increasing atomic number

• Random order

• Increasing atomic mass

• Alphabetical order

Which of the following statements about periods in the periodic table is true?

• All periods contain the same number of elements.

• Elements in the same period have similar chemical properties.

• Periods are arranged vertically.

• The number of elements in a period varies.

How are groups in the periodic table typically numbered?

• Using colors

• Using Roman numerals

• Using Arabic numerals

• Using letters

Which group in the periodic table is known for being highly reactive?

• Halogens

• Noble gases

• Transition metals

• Alkali metals

What is a characteristic of noble gases in the periodic table?

• They are all liquids at room temperature.

• They are highly reactive.

• They are all metals.

• They are not reactive.