Strong acids have a higher PH while weaker acids have a lower PH
I'm other words, acidic bases have a higher PH whilst less acidic bases have lower PH
Chlorine has a charge -1. It means that X is +2 so that the formula is XCl2. Group 2 is the correct answer.
C The number of outermost electrons increases.
Atomic number = No. of proton = 1
so, your answer is 1
By adding a lot of carbon dioxide of what is necessary could be harmful for living things, the carbon cycle is something natural, this cycle released enough carbon dioxide, as result not to damage living things so by adding more could prejudicial