Question

(a) Element with highest ionization energy....
Please help me​

Answer 1

Answer:

Helium

Explanation:

ionization energy decreases from top to bottom in groups, and increases from left to right across a period.Thus helium is largest ionization energy.

Answer 2

Answer:

X is the element with highest ionization enthalpy.

this is because X is a noble gas and is the most stable form..so to remove an electron from it is very difficult and hence the largest amount of energy is required to remove the electron.

whereas Z is the element with lowest ionization enthalpy.

IONIZATION ENTHALPY : amount of energy required to remove the most loosely bound electrons from the atom.

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