Correct Answer - Option 4 : decreases from left to right across a period and increases on descending a group
Concept:
This occurs as atoms more readily accept electrons to fill a valence shell than lose them to remove the unfilled shell. Metallic character increases as you move down an element group in the periodic table.
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The metal periodic table, also known as the periodic table of elements, is a tabular display of the chemical elements, which are arranged by atomic number, electron configuration, and recurring chemical properties.
- The structure of the table shows periodic trends. The seven rows of the table, called periods, generally have metals on the left and nonmetals on the right.
- The columns, called groups, contain elements with similar chemical behaviours.
- Six groups have accepted names as well as assigned numbers: for example, group 17 elements are the halogens; and group 18 are the noble gases.
- Also displayed are four simple rectangular areas or blocks associated with the filling of different atomic orbitals.
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Ionic character decreases as you move across a period in the periodic table from left to right.
Explanation:
Metallic character refers to the level of reactivity of a metal. Metals tend to lose electrons in chemical reactions, as indicated by their low ionization energies.
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Metals
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Non-metals
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Metalloids
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Silver
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Carbon
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Boron
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Copper
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Hydrogen
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Arsenic
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Iron
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Nitrogen
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Antimony
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Mercury
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Sulfur
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Germanium
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So, In the periodic table, the metallic character of elements decreases from left to right across a period and increases on descending a group.
