Answer:
1) NaCl, 5)MgS
Explanation:
What makes something an Ionic Bond:
- Ionic bonds are generally between two oppositely charged ions. Usually salts are formed.
- A metal and nonmetal are also generally considered to be ionic.
- Electronegativity also plays a role in a difference of electronegativity of elements being greater than 2.0.
For 1) Na has a charge of 1+ and Cl has a charge of 1-. They both come together to form table salt. Their electronegativity is also larger than 2.0. Also Na is a metal and Cl ion is a nonmetal.
For 2) C and O are both nonmetals and are covalent bonds
For 3) Water is a polar covalent molecule because there is a electronegativity difference between H and O, but not great. H and O are also nonmetals.
For 4) While Fe is a metal and O is a nonmetal, their electronegativity difference is not greater than 2.0. This makes it polar covalent.
For 5) Mg is a metal and S is a nonmetal. They have a large electronegativity difference. Also Mg has a charge of 2+ while S has a charge of 2-.
B: Saturn, because it has over 10 rings.
Explanation:
You need to remember a few things if you want the answer to this question...
- A atom has a circle within a circle so consider that it looks like a double circle..
- Protons and neutrons go in the center of that double circle..
- Electrons go on the outer sides of the two circles.
- Because of the given numbers of protons, neutrons, and electrons we know that the element you need to draw is Argon.
Therefore you need to draw a atom that is similar to this:
Hope this helps.
Answer:
76%
Explanation:
Actual yield = 38.0 g
Theoretical yield = 50.0 g
Percentage yield = ?
The relationship between these quantities is given as;
Percent yield = Actual yield / Theoretical yield * 100%
Percent yield = 38 g / 50 g * 100 %
Percent yield = 0.76 * 100 % = 76%