Answer:
Explanation: ques 8
I think so it is a hydrogen atom ,because it is only atom atom that has 1 proton .as the question is to identify the atom with no of proton so it is hydrogen . it has atomic number 1
ques 9
the isotpoe of hydrogen having 2 neutrons is caled tritrium . it has mass number 3
ques no 10
as the protons are present in nucleus and electrons revovle around it so the term is clear . remember atoms do not have defined boundaries .
