Question

question 6 (6 points)
an atom containing 43 protons, 56 neutrons, and 43 electrons would have the symbol...
o a 99tc
o b 86tc
o c 99ba
o d 43se
o e 86se

Explanation:

Step1: Determine the element

The number of protons determines the element. The element with 43 protons is Technetium (Tc).

Step2: Calculate the mass number

Mass number \(A=\) number of protons \(+\) number of neutrons. Given \(p = 43\) (protons) and \(n=56\) (neutrons), then \(A=43 + 56=99\).

Answer:

A. \(^{99}\text{Tc}\)