Part 1: Potassium, and Rubidium.
Part 2: Calcium has 20 protons and 20 electrons because the atomic number for calcium is 20 and that determines how many protons there are and in an atom, the number of protons is the same number of electrons. Calcium has about 20 neutrons. I got the number of Neutrons by subtracting the mass number(40.078) and the atomic number(20), I got 20.078. Round to the nearest whole number because you cannot have half or partial neutron. So, Calcium has 20 protons, 20 electrons, and 20 neutrons,
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Answer:
Explanation:
It probably would have been broken down to smaller pieces and spread out around the world. Hope this help! :)
I don’t know what to do with the answer I don’t know how you feel sorry I didn’t
Enthalpy change refers to the overall amount of heat added or lost with each step as you progress through your reaction.
Clap your hands each part word you eat and you will get your answer.