Class 10SciencePeriodic Classification of ElementsMix Examples - Periodic Classification of Elements
MediumWrite the trend of atomic size and metallic character along a group and a period in the modern periodic table.
(N/A) Trend of atomic size:
Along a group: From top to bottom,the atomic size increases because a new shell is added in each subsequent element.
Along a period: From left to right,the atomic size decreases because the nuclear charge increases,which pulls the electrons closer to the nucleus.
Trend of metallic character:
Along a group: Metallic character increases from top to bottom because the tendency to lose electrons increases due to the increase in atomic size.
Along a period: Metallic character decreases from left to right because the tendency to lose electrons decreases as the effective nuclear charge increases.
Along a group: From top to bottom,the atomic size increases because a new shell is added in each subsequent element.
Along a period: From left to right,the atomic size decreases because the nuclear charge increases,which pulls the electrons closer to the nucleus.
Trend of metallic character:
Along a group: Metallic character increases from top to bottom because the tendency to lose electrons increases due to the increase in atomic size.
Along a period: Metallic character decreases from left to right because the tendency to lose electrons decreases as the effective nuclear charge increases.
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$(i)$ Name the elements which have the smallest and the largest atoms.
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$(ii)$ How does the atomic size vary as you go down a group?
$(i)$ Name the elements which have the smallest and the largest atoms.
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$(ii)$ How does the atomic size vary as you go down a group?
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