Answer:Calcium atoms have smaller radii than potassium atoms since calcium atoms have a greater nuclear charge.
Explanation:
Displacement reaction is a chemical reaction in which a more reactive element displaces a less reactive element from its compound. Both metals and non-metals take part indisplacement reactions. Example :Reaction of iron nails with copper sulphate solution.AB + C → AC + B
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24
Explanation:
we have the equation d = m/v so here the density is 12 and the volume is 2, 12 = m/2. in this situation we multiply 12×2= 24. The mass is 24.
Let's check if it works with the formula
24/2 = 12
12 = 24/2
yes. it works
the answer is mass = 24
The atomic number is equal to the number of protons
I think is b.an explosion hope it works