What are the trends in:- ionization enthalpy of group 17 elements ?

What are the trends in:- electronegativity of group 17 elements ?

What is ionization enthalpy?

Explain the trends in ionisation enthalpies of d-block elements.

Explain oxidation state of Group 17 elements

What are the various factors due to which the ionization enthalpy of the main group elements tends to decrease down a group?

Explain the trend in following atomic properties of group 17 elements:- Electronegativity

Explain the trend in following atomic properties of group 16 elements:- Ionisation enthalpy

Explain the trend in following atomic properties of group 16 elements:- Atomic radii

Explain the trend in following atomic properties of group 16 elements:- Electronegativity.

What is the highest oxidation state exhibited by group 17 elements ?