Question

plz answer me this it is very important plz answer me who will give correct answer I will mark him or her as a brain list this question is very important ​

Answer 1

Step-by-step explanation:

lsobars are elements with. A) same mass number, different atomic number. B) same atomic number, different mass number.

Answer 2

Answer:

PLEASE MARK MY ANSWER AS BRAINLEST!!!!!!!!!!

Step-by-step explanation

2) question cant answer but i will give you the answer: -45 , 24

3)a)-5                        3)b)156