A tabular form in which the chemical elements are positioned according to the chemical and physical attributes is called the periodic table. The horizontal rows from left to right is referred as periods in the table.
The correct option is:
Option A. Ionization energy increases
This can be explained as:
- The ionization energy raises from left to right because of valence shell resilience.
- The nuclear charge on the atom expands and protons in the nucleus lure the electrons more strongly.
Therefore due to the high proton number, the ionization increases across the period.
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