Answer:
c
Explanation:
plants decrease the levels of carbon dioxide in the atmosphere due to the process of photosynthesis
Answer: True.
Explanation.
The group 7A is actually named group 17.
That group is the halogens: F, Cl, Br, I, At, and Ts (Ts is one of the last elements discovered).
Those elements have 7 valence electrons (notice that it is the same number as the second digit in 17).
The atoms with 7 valence electrons will "easily" gain one electron to get the configuration of the next noble gas (8 valence electrons). That is why these elements gain electrons to form ions.
When atoms gain electrons form anions (negative ions). For example: F(-), Cl(-), Br(-), I(-).
56% percent is the answer
Answer:
- rows and columns
- period
- atomic orbitals
4.similar properties
5.electrons are very reactive
Answer: 35.4 g
Explanation:
The balanced reaction is :
To calculate the moles :
According to stoichiometry :
2 moles of phosphorous chloride are produced by = 3 moles of 
Thus 0.37 moles of phosphorous chloride are produced by=
of
Mass of 
Thus 35.4 g of chlorine reacted with the phosphorus
