Question

PLLEEEAAASSEE HUURRY!!!!!

How many protons, neutrons, and electrons does rubidium-87 contain? *

A) 87 protons, 85.5 neutrons, 87 electrons
B) 37 protons, 37 neutrons, 37 electrons
C) 37 protons, 87 neutrons, 37 electrons
D) 37 protons, 40 neutrons, 37 electrons

Answer 1

i thought it had 37 protons, 48 neutrons, 37 electrons

Answer 2

A. because of the number 37