Question

How many protons and electrons are present if an isotope has A=241 and n= 155? Identify the name of the element.

Answer 1

It would have 86 protons and electrons. Element 86 is Radon

Step-by-step explanation:

It would have 86 protons and electrons. Protons and electrons are equal. However proton plus neutron equals atomic mass. So to find the number of protons it would be 241-155=86. Now we would look for the element with the atomic number of 86 which would be Radon.