thylycoris thylycoris

14-04-2022
Physics

contestada

help me PLEASE, it's physical science D:

help me PLEASE its physical science D class=

Respuesta :

ashmwatanabe ashmwatanabe

14-04-2022

Answer:

90

Explanation:

The bottom number on the element is the number of protons and the top number is the total of the protons + neutrons

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