dolphin2112:
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)
Imagine:
-Magnesium -Strontium They have similar properties as Calcuim
dolphin2112:
thank you
Imagine:
We know that the atomic number of sodium is 11. This tells us that sodium has 11 protons and because it is neutral it has 11 electrons. ... Since sodium has 11 protons, the number of neutrons must be 23 – 11 = 12 neutrons. Accoriding to https://www.bbc.co.uk/bitesize/guides/zw2gpbk/revision/4#:~:text=We%20know%20that%20the%20atomic,neutral%20it%20has%2011%20electrons.&text=Since%20sodium%20has%2011%20protons,23%20%E2%80%93%2011%20%3D%2012%20neutrons.
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