The statement about electronegativity that is correct is <span>D. Noble gases have the highest electronegativity values.</span>
<span>1.Schrodinger's equation deals with the modern atomic theory.
2. They are tested by many scientists.
3. I am not sure on this one.
4. It depends on the atomic weight of the boron. There are 5 protons for sure, but the number of neutrons depends on the isotope.</span><span>
</span>
It’s a combustion reaction but what are you trying to find?
Answer:
20 protons.
Explanation:
20 protons = 20 + charges
18 electrons = 18- charges.
The difference = 20 - 18 = +2
The charge for this ion is plus 2
It is a calcium ion. The element is number 20 on the periodic table.