Problem: Which atom in each pair has the larger atomic radius? a) Li or Kb) Ca or Nic) Ga or Bd) O or Ce) Cl or Brf) Be or Bag) Si or Sh) Fe or Au

FREE Expert Solution

We are being asked to determine which atom in each pair has the larger atomic radius


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

Trend of atomic radius in the periodic table:

decreases going from left to rightof a period

increases going down a group


For the given elements, let’s check their location in the periodic table and see how they fall in the trend mentioned.



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Problem Details

Which atom in each pair has the larger atomic radius? 

a) Li or K

b) Ca or Ni

c) Ga or B

d) O or C

e) Cl or Br

f) Be or Ba

g) Si or S

h) Fe or Au

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.