Answer:
Valency of the two elements
Explanation:
In order to correctly formularize the compound, the student needs to ask of the valences of the elements involved.
Chlorine has valency of -1, while Barium +2.
The exchange of valency gives the formula 
.
Another explanation is that Barium donates 2 electrons which the chlorine atoms accept, in order to form the covalent bond.
I hope this was helpful.
R = 1.3 A° = 1.3 × 10^(-10) m
V = 9.20277208×10^(−30) m.
Answer:
It can you just have to find a song that get's stuck in your head and try replacing the studing answer with the song because then the answer will get stuck in your head.
Explanation:
The amount of matter in an object is said to be its mass. The SI base unit of mass is kilograms i.e. 
.
The mass of the object = 
(given)
For converting lbs to kg:
So, 
Hence, the mass of 
object in kilograms is 
.
