Give two reasons to explain how the metallic | vedclass

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(N/A)  Characteristic Metallic character in a group Metallic character in a period$1.$ Effective nuclear chargeThe effectiv

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(N/A)  Characteristic Metallic character in a group Metallic character in a period$1.$ Effective nuclear chargeThe effective nuclear charge experienced by valence electrons decreases because the outermost electrons are farther from the nucleus due to the addition of new shells.The effective nuclear charge experienced by valence electrons increases,holding the outermost electrons more tightly. This occurs because the number of shells remains constant across a period.$2.$ Tendency to lose or gain electronsThe tendency to lose electrons increases as we move down a group. Consequently,metallic character and basic character increase.The tendency to gain electrons increases due to the increased nuclear charge. Consequently,non-metallic character and acidic character increase.

Give two reasons to explain how the metallic character of elements varies: $(a)$ in a group,$(b)$ in a period.

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< strong>Characteristic	< strong>Metallic character in a group	< strong>Metallic character in a period
$1.$ Effective nuclear charge	The effective nuclear charge experienced by valence electrons decreases because the outermost electrons are farther from the nucleus due to the addition of new shells.	The effective nuclear charge experienced by valence electrons increases,holding the outermost electrons more tightly. This occurs because the number of shells remains constant across a period.
$2.$ Tendency to lose or gain electrons	The tendency to lose electrons increases as we move down a group. Consequently,metallic character and basic character increase.	The tendency to gain electrons increases due to the increased nuclear charge. Consequently,non-metallic character and acidic character increase.