(35)/(17)Cl" and "_(17)^(37)Cl" are "

Why do ""_(17)^(35)Cl and ""_(17)^(37)Cl have the same chemical properties though their atomic masses are different ?

How did the position of frac(35)(17)Cl and frac(37)(17)Cl get fixed in the Modern periodic table?

Natural chlorine consists of two isotopes : 75% ""_(17)^(35)Cl and 25% ""_(17)^(37)Cl . Calculate the average atomic mass of chlorine .

Chlorine occurs in two isotopic forms that is ._(17)^(35)Cl and ._(17)^(37)Cl . The percentage of these forms are 75% and 25% respectively. Find atomic weight of chlorine atom?

""_(17 ) Cl^(35) and ""_(17) Cl ^(37) are ________ .

""_(17 ) Cl ^(35 ) and ""_(17) Cl^(37 ) are _________.

What are ._(17)^(35) Cl and ._(17)^(37) Cl ? Why