Which has higher ionization energy out of Be and B and why ? 1

Ionization energy of hydrogen is

Which has higher mobility, electron of hole?

Which has higher ionisation enthalpy and why, Mg or Al.

Which has higher electron affinity, F or Cl ?

Among Be, B and C, which element has the highest first ionisation enthalpy and why ?

Which has a higher pitch, whistle or a drum ?

Why 5d transition series elements have higher ionization enthalpies than 4d transition series elements ?

In a hydrogen atom, which orbital is higher in energy than a 3s-orbital?

A single electron in an ion has ionization energy equal to 217.6eV . What is the total number of neutrons present in one ion of it?