Giúp mình có thể giải thích

the correct option is c.

isotopes refers to different forms of the same element with the same atomic number but different mass number as a result of difference in their neutron numbers. isotopes have different relative atomic mass but share the same chemical properties.

answer; talc and gypsum;

the answer to this question is 3.

because of all the things that happen around the us, many people get into arguments which sadly could get physical, but we should actually make a change for that.