2K + Cl2 ---> 2KCl
2K+Cl2------->2KCl
Potassium + Chlorine --> Potassium Chloride (potassium plus chlorine arrow potassium chloride)
2KBr + Cl2 ----> 2KCl + Br2
It is impossible to balance that equation.
H2 + Cl2 --------> 2HCl
you have to write... 2KI + Cl2 = 2KCl + I2
2KI + Cl2 = 2KCl + I2
There are two elements in potassium chloride. One atom of potassium and one atom of chlorine react to form potassium chloride.
iodine and chloride ions
potassium chlorine
2KI + Cl2 = 2KCl + I2
I'm guessing you meant KCl or potassium chloride.