You don't have to do this first part, but I think it's important to know if something is ionic, sometimes you get trick questions on exams.
Na has an electronegativity of 0.93.
Cl has an electronegativity of 3.16.
--------- There is a difference of, 2.23
When the electronegativity difference is greater than 1.5, the compound is ionic.
NaCl is an ionic compound, so when it dissolves in a solvent, it separates into two.
Steps to solve:1. There are 6.02 x 10²³ molecules in one mole
2. There are 13.54 moles in our sample
3. We must convert moles to molecules by multiplying.
4. After the number of molecules is obtained, you must multiply that number by 2 to obtain the number of ions, because NaCl is ionic.
Hope this helps!
<span>The effective nuclear charge of an atom = total electrons - inner electrons
For O, ENC = 8 - 2 = 6
For Li, ENC = 3 - 2 = 1
For C, ENC = 6 - 2 = 4
The electrons in O experience the greatest effective nuclear charge and that is why O is smaller than C (which is smaller than Li).</span>
An element's atomic number shows the number of protons in its nucleus.
<em>Octopus and squids breathe</em> <em>like </em><em>fishes </em><em>they </em><em>breathe </em><em>from </em><em>gills </em>
<em>so </em><em>even </em><em>octopus</em><em> and</em><em> squids</em><em> </em><em>breathe </em><em>through </em><em>gills </em><em>too.</em>
<em><u>maybe </u></em><em><u>this </u></em><em><u>answer</u></em><em><u> </u></em><em><u>would</u></em><em><u> </u></em><em><u>help</u></em><em><u> </u></em><em><u>u</u></em>
Answer:
I think it's streak and cleavage.
Explanation:
I'm not the smartest so sorry if it's wrong.