Multiple choice

What does each row of the periodic table start with?

  1. Alkali Metal

  2. Alkaline Earth Metal

  3. Halogen

  4. Noble Gas

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A Correct answer
Explanation

Each row (period) of the periodic table begins with an alkali metal (Group 1), with the exception of the first period which begins with hydrogen. Hydrogen is a nonmetal, but it is placed in Group 1 due to its electron configuration.