Question

Generally how does the first ionization energy vary as the atomic number increases going across a period

Answer 1

Across a period I.E increases progressively from left to right

Explanation:

The trend of the first ionization energy is such that across a period I.E increases from left to right due to the decreasing  atomic radii caused by the increasing nuclear charge. This not compensated for by successive electronic shells.

• Ionization energy is a measure of the readiness of an atom to lose an electron.
• The lower the value, the easier it is for an atom to lose an electron.
• Elements in group I tend to lose their electrons more readily whereas the halogens hold most tightly to them.
• The first ionization energy is the energy needed to remove the most loosely bonded electron of an atom in the gaseous phase.

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Ionization energy brainly.com/question/6324347

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