everyday science MCQ #48555

Which of the following correctly lists elements in order of increasing atomic number?

everyday science MCQ #48555

  1. Question 1

    Q1. Which of the following correctly lists elements in order of increasing atomic number?

    • A) Carbon, Oxygen, Hydrogen, Iron
    • B) Iron, Carbon, Oxygen, Hydrogen
    • C) Oxygen, Carbon, Iron, Hydrogen
    • D) Hydrogen, Carbon, Oxygen, Iron

    Answer: Hydrogen, Carbon, Oxygen, Iron

    Explanation: H=1, C=6, O=8, Fe=26 — so the correct ascending order of atomic number is Hydrogen (1), Carbon (6), Oxygen (8), Iron (26).