Question

Order the following elements based on the number of neutrons they contain from least to greatest. HINT: Calculate the number of neutrons for each element first and then put them in order. It could be helpful to use a scrap piece of paper.

A) Neon, Sodium, Potassium, Argon

B) Neon, Argon, Sodium, Potassium

C) Potassium, Neon, Argon, Sodium

D) Sodium, Potassium, Neon, Argon

Answer 1

The correct order of the elements from least to greatest number of neutrons is Neon, Sodium, Potassium, Argon.

Step-by-step explanation:

The correct order of the elements based on the number of neutrons they contain from least to greatest is:

1. Neon
2. Sodium
3. Potassium
4. Argon

To determine the number of neutrons, you need to subtract the atomic number from the mass number. Neon has 10 protons and 10 neutrons (mass number of 20), Sodium has 11 protons and 12 neutrons (mass number of 23), Potassium has 19 protons and 20 neutrons (mass number of 39), and Argon has 18 protons and 22 neutrons (mass number of 40).