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Out of #Tc, Rh, Zr, Y#, which element has the smallest atomic radius?

Answer 1

#"Rhodium"# has the smallest atomic radius of the given elements.

Atomic size DECREASES from left to right across a Period as we face the Table, but INCREASES down a Group. All of the metals originate from the 2nd row transition series.

Given the atomic numbers, atomic yttrium (#"Group 3"#) is larger than zirconium (#"Group 4"#), which is larger than technetium (#"Group 7"#), which is larger than rhodium (#"Group 9"#).

I may be pulling your leg, but it is your responsibility as a chemist and a physical scientist to find the information that supports this claim. You should look up information that lists the atomic radii of the elements.

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Answer 2

Olivia Anton

Out of Tc, Rh, Zr, and Y, rhodium (Rh) has the smallest atomic radius.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.