Which element has the smallest atomic number among the listed elements?

Prepare for the Pre-IB Grade 9 Science Exam with detailed flashcards and multiple-choice questions. Each question is paired with hints and thorough explanations. Ace your test with confidence!

Multiple Choice

Which element has the smallest atomic number among the listed elements?

Explanation:
Atomic number equals the number of protons in an atom, which uniquely identifies an element. The elements listed have atomic numbers: boron has 5, neon has 10, sodium has 11, and silicon has 14. Since 5 is smaller than 10, 11, and 14, boron has the smallest atomic number. This reflects its position earlier in the periodic table compared to the others.

Atomic number equals the number of protons in an atom, which uniquely identifies an element. The elements listed have atomic numbers: boron has 5, neon has 10, sodium has 11, and silicon has 14. Since 5 is smaller than 10, 11, and 14, boron has the smallest atomic number. This reflects its position earlier in the periodic table compared to the others.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy