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In the periodic table, the metallic character of elementsOnly one correct answerA.Decreases from left to right across a period and on descending a groupB.Decreases from left to right across a period and increases on descending a groupC.Increases from left to right across a period and on descending a groupD.Increases from left to right across a period and decreases on descending a group

Question

In the periodic table, the metallic character of elementsOnly one correct answerA.Decreases from left to right across a period and on descending a groupB.Decreases from left to right across a period and increases on descending a groupC.Increases from left to right across a period and on descending a groupD.Increases from left to right across a period and decreases on descending a group

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Solution

The correct answer is B. The metallic character of elements decreases from left to right across a period and increases on descending a group in the periodic table.

Here's why:

  1. Across a Period (Left to Right): As we move from left to right across a period, the number of protons in the nucleus increases, which increases the nuclear charge. This increased nuclear charge attracts the electrons more strongly, reducing the tendency to lose electrons, which is a characteristic of metals. Therefore, the metallic character decreases.

  2. Down a Group: As we move down a group, the number of energy levels (shells) increases. These additional shells shield the outermost electrons from the nucleus' pull, making it easier for the atom to lose electrons, a characteristic of metals. Therefore, the metallic character increases.

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Similar Questions

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