Mass number minus atomic number equals which quantity?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Enhance your study skills for the GMAS Physical Science Test with detailed questions and hints. Utilize our flashcards and multiple choice format for effective learning, and gear up for success!

Multiple Choice

Mass number minus atomic number equals which quantity?

Explanation:
Mass number counts protons plus neutrons, while the atomic number counts only protons. Subtracting the atomic number from the mass number leaves just the neutrons. So the difference tells you how many neutrons are in the nucleus. For example, if A = 23 and Z = 11, there are 12 neutrons. This also shows why isotopes exist: they have the same number of protons but different numbers of neutrons, leading to different mass numbers.

Mass number counts protons plus neutrons, while the atomic number counts only protons. Subtracting the atomic number from the mass number leaves just the neutrons. So the difference tells you how many neutrons are in the nucleus. For example, if A = 23 and Z = 11, there are 12 neutrons. This also shows why isotopes exist: they have the same number of protons but different numbers of neutrons, leading to different mass numbers.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy