Answer:
2.5, - 2.5
Explanation:
Given that :
Coordinate of A = 0
and AR = 5 ; distance between A and R
Possible. Coordinate of the midpoint of AR overbar.
Hence for a distance of 5 points between A and R, then R may be located 5 points either side of A, that is to the left of right.
Kindly check attached picture for detailed workings
What happens when chlorine form an ion is that it gains an electron and has an octet in its outer shell ( answer A)
<u><em> Explanation</em></u>
<u><em> </em></u>Chlorine is is in atomic number 17 in periodic table.
The electron configuration of chlorine is 1S2 2S2 2P6 3S2 3P5 or[Ne]3S2 3p5 or 2.8.7.
chlorine therefore has 7 valence electron therefore it gain 1 electron to form Cl- ( ion)
Cl- has 8 electron in its outer shell ( it obeys octet rule of eight valence in outer shell.
Answer:
<h2>30.33 km/hr</h2>
Explanation:
The speed of the car can be found by using the formula
d is the distance
t is the time taken
From the question we have
We have the final answer as
<h3>30.33 km/hr</h3>
Hope this helps you
Answer:
For O: atomic number = 8 # neutrons = 8
For Al: atomic mass = 27, # electrons = 13