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We expect the atomic radius to increase down a group in the periodic table. Can you suggest why the atomic radius of hafnium breaks this rule? (See the following data.)
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As we move down a group in the periodic table, the number of electron shells increases, leading to an increase in atomic radius. Show more…
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We expect the atomic radius to increase going down a group in the periodic table. Can you suggest why the atomic radius of hafnium breaks this rule? (See data below.)
We expect the atomic radius to increase down a group in the periodic table. Can you suggest why the atomic radius of hafnium breaks this rule? (See the following data.) $$\begin{array}{lclc} & \text { Atomic } & & \text { Atomic } \\ \text { Element } & \text { Radius }(\AA) & \text { Element } & \text { Radius }(\AA) \\ \hline \mathrm{Sc} & 1.57 & \mathrm{Ti} & 1.477 \\ \mathrm{Y} & 1.693 & \mathrm{Zr} & 1.593 \\ \mathrm{La} & 1.915 & \mathrm{Hf} & 1.476 \end{array}$$
We expect the atomic radius to increase going down a group in the periodic table. Can you suggest why the atomic radius of hafnium breaks this rule? (See data below.) $$\begin{array}{llll}{\mathrm{Sc}} & {157} & {\mathrm{Ti}} & {147.7} \\ {\mathrm{Y}} & {169.3} & {\mathrm{Zr}} & {159.3} \\ {\mathrm{La}} & {191.5} & {\mathrm{Hf}} & {147.6}\end{array}$$
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