Question

An element's atomic number is 99. How many electrons would an atom of this element have?

Answer 1

99 electrons

Element with 99 protons (atomic number) (Es - Einsteinium) will have 99 electrons at its stable state. But usually, any element above the atomic number of 83 is unstable, you should learn that in nuclear chemistry. But for your purposes, the answer should be 99 electrons.

Hope This helps.

Answer 2

99

Step-by-step explanation:

Atomic number = Number of protons

Number of protons = Number of electrons