Answer:
calcium 20. charge of calcium is +2
2,8,8,2 is elecrons arrangement in the outermost shell.2 electrons in the outermost shell easily remove it. And form stable cations.
Explanation:
There are 5 significant figures in <span>147,320.</span>
Volume of water displaced is equal to the volume of the metal. So 41 - 20 = 21 ml. Density = mass / volume so density = 159 / 21 = 7.57 g/ml
Explanation:
A single-replcaement reaction is a chemical reaction in which one element replaces another in a compound.
A double replacement reaction is a reaction in which the metals in two ionic compounds exchange partners.
Answer:
6 neutrons. The mass number is the number of protons and neutrons in the nucleus of an atom. The atomic number shows how many protons. Subract the atomic number from the mass number to find the number of neutrons.
Explanation:
