Can someone help me I need help please!

Explanation:

the number above the letter is the atomic number and the other on the bottom is the atomic mass . and the mass number is the atomic mass . and protons is the number above the letter along with neutrons electrons you just do atomic mass - atomic number = electrons

example 1 -2= 1 so there is the atomic number of 1 and atomic mass of 2

let me know if this helps

yes

explanation:

search chemistry final b exam in google and a site called quizlet will pop up

idk what the question is about