Answer:
orbital speed of the electrons in their orbit will increase
Step-by-step explanation:
As we know that centripetal force for electrons will be due to electrostatic attraction force of electron.
So it is given as

so we have

now on the left side if the force of attraction will increase and hence there must be the change in that part of equation
So here at the same position the speed of the electron
So we can say that correct answer will be
orbital speed of the electrons in their orbit will increase