Answer : Note : The formula give in the question needs to be corrected , the formula of two chlorine atoms for every magnesium atom in the compound is which is Magnesium Chloride.
Explanation : To write the formula of the compound we need to know the charge of the atoms or elements involved in the formula.
Charge of Mg is +2 and charge of Cl is -1 , to write the formula of the compound we always criss cross the charges. And also when we write the formula the total (or net) charge of the compound should be 0. Charge of Mg is +2 so to get the total(net) charge as 0 we need two Cl atoms with each -1 charge.
Mg = +2 , Cl = -1 , Cl = -1
2 Cl = -1 + (-1) = -2
Mg = +2 and 2 Cl = -2
+2 -2 = 0
So the formula for Magnesium Chloride is
Answer: different charges but same mass
protons and neutrons determine the mass (electrons are too light)
since atom q and atom r are of the same proton and neutron , they are of the same mass
protons and electrons determine the charge
a proton has a 1+ and electron has a 1- charge
atom q has no charge, the protons and electrons cancel each other out
atom r has a 1- charge as there is one more electron than proton.
No, because electrons do not reside in the nucleus. But if you are wonder if the Number of electrons and protons effect the atom then yes, it does. You must have a equal number of electrons and protons but as for the stability of the atom, electrons won't mess the nucleus up.
The answer is; <span>The moon can be seen from Earth because *sunlight* reflects off the moon’s surface.</span>
Answer:
This structure shows that, "<span>Water is polar, which means it has an uneven distribution of charge making it a good solvent of other polar molecules".
Explanation:
When the Electronegativity difference between two atoms joint through covalent bond is greater than 0.4 and less than 1.7, then the bond is said to be polar bond, and molecule containing polar bonds with asymmetry are said to be polar molecules. In water the Electronegativity difference between Oxygen atom and Hydrogen atom is calculated as,
E.N of Oxygen = 3.44
E.N of Hydrogen = 2.20
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Difference 1.24
Hence, the bond is Polar covalent bond.
Secondly, as we know that Like dissolves Like, so water being polar in nature will interact with polar compounds. And polar compounds will tend to dissolve in water. So, water is a good solvent for polar compounds.</span>