Why does the first ionisation energy increase as we go from left to right along a given period of periodic table?

Why does the first ionization enthalpy increase as we go from to across a given period of the Periodic Table?

Which parameter decreases as we move from left to right along a period?

How do the atomic radii of elements change as we go from left to right in a period of the periodic table?

A quantitative measure of the tendency of an element to lose electron is given by its ionisation enthalpy (I.E.). I.E. increases from left to right in a period of the periodic table. However, in second period, the I.E of oxygen is less than that of nitrogen. Why?

How would the tendency to lose electrons change as we go from left to right across a period of the periodic table?

Atomic radius increases while going from left to right within a period.

The ionization energy of elements increases in a period from left to right

Give reasons why ? The oxidizing nature of elements increases on moving from left to right along a period in the periodic table.

How does atomic radii as we move from left along a period in the periodic table?

Electronegativity increases while going from left to right within a period.