b. i hope thats the right answer and works
Yes, the Mg2+ ion and the neutral neon atom are called isoelectronic
We can conclude that Donald is the shortest friend.
<h3>
Who is the shortest?</h3>
This is a logical question, first, we know that the tallest friend will be on the left side, so we assume that the left position can be discarded, so we need to find who is in the right position.
Barry is not in the center and is not the youngest, so Barry is the tallest friend.
Donald is not in the center, and we know that the youngest must be on the right of Adam. So the only position left for Donald is the right one.
Then, we can conclude that Adam must be on the center and Donald on the right extreme. Then Donald is the youngest and shortest friend.
If you want to learn more about logic, you can read:
brainly.com/question/540969
Answer:
∠C = 159°
∠D = 21°
Explanation:
∠C + ∠D = 180 (1)
∠C = 33 + 6∠D (2)
Substituting (2) to (1):
180 = 33 + 6∠D + ∠D
= 33 + 7∠D
180 - 33 = 7∠D
147 = 7∠D
<u>21 = ∠D</u>
If ∠D = 21,
∠C + 21 = 180
∠C = 180 - 21
<u>∠</u><u>C</u><u> </u><u>=</u><u> </u><u>159</u>
