Periodic Trend: Atomic Radius Video Lessons

Concept:

# Problem: Of the following, which gives the correct order for the atomic radius for Ca, K, As, Ge and Kr?A) Ca &gt; K &gt; As &gt; Ge &gt; Kr B) Kr &gt; Ge &gt; As &gt; K &gt; Ca C) Ge &gt; As &gt; Kr &gt; K &gt; Ca D) K &gt; Ca &gt; Ge &gt; As &gt; Kr E) Kr &gt; As &gt; Ge &gt; Ca &gt; K

###### FREE Expert Solution

We’re being asked to rank the given set of elements in order of decreasing atomic radius.

Atomic radius represents the distance from the nucleus to the outer shell of an element.

The trend of the atomic radius in the periodic table:

decreases going from left to right of a period

increases going down a group

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###### Problem Details

Of the following, which gives the correct order for the atomic radius for Ca, K, As, Ge and Kr?

A) Ca > K > As > Ge > Kr

B) Kr > Ge > As > K > Ca

C) Ge > As > Kr > K > Ca

D) K > Ca > Ge > As > Kr

E) Kr > As > Ge > Ca > K

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Periodic Trend: Atomic Radius concept. You can view video lessons to learn Periodic Trend: Atomic Radius. Or if you need more Periodic Trend: Atomic Radius practice, you can also practice Periodic Trend: Atomic Radius practice problems.

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Based on our data, we think this problem is relevant for Professor Costanza's class at USF.