An increase in the frequency of effective collisions because it is these collisions that cause reactants to change to products
Atomic number refers to the proton number of the atom itself. Number of electrons in an atom (an atom that is not reacted with any other molecules / Just the atom alone), is the same as the number of protons, because each electron has 1 negative charge, and each proton 1 positive charge, where they cancel out on each other to become a neutral charge.
So, when atomic number is 6, proton number is also 6, and number of electrons will also be 6 in that atom.
Hope this helps! :)
Answer:

27.70 is
for the reaction.
Explanation:

The equilibrium constant of the reaction = 
The expression of equilibrium constant is given by :
..[1]

The equilibrium constant expression for above reaction can be written as:
![K_c'=\frac{[COBr_2]^2}{[CO]^2[Br]^2}](https://tex.z-dn.net/?f=K_c%27%3D%5Cfrac%7B%5BCOBr_2%5D%5E2%7D%7B%5BCO%5D%5E2%5BBr%5D%5E2%7D)
( from [1])

27.70 is
for the reaction.
Observe a blue light be wavelength flame test during