Ddayknight
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PLS HELP QUICKLY I WILL GIVE 79 POINTS FOR YALL TO ANSWER THIS QUESTION!

Part 1: Name two elements that have the same properties as calcium (Ca). (4 points)
Part 2: Determine the number of protons, electrons, and neutrons present in an atom of sodium (Na). Explain how you determined your answer using complete sentences. (6 points) (10 points)

Respuesta :

dillontmcleod

Answer:

Magnesium and strontium

Explanation:

11 protons and 11 electrons, 12 neutrons.

The atomic number of sodium is 11, therefore the number of electrons and protons are 11. The atomic mass is 23, and to find neutrons you need to subtract the atomic number from the atomic mass, therefore the number of neutrons are 12.

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