Question

Which of the following has the largest atomic radius?

a. Barium (Ba) or Bismuth (Bi)
b. Beryllium (Be) or Barium (Ba)
c. Rubidium (Rb) or Chlorine (Cl)
d. Calcium (Ca) or Krypton (Kr)
e. Rubidium (Rb) or Iodine (I)

Answer 1

The atomic radius generally decreases across a period and increases down a group in the periodic table.

Step-by-step explanation:

The atomic radius is a measure of the size of an atom, specifically the distance from the nucleus to the outermost electron shell. In general, atomic radius decreases across a period and increases down a group in the periodic table. Using this information, we can determine which pairs of elements have the larger atomic radius.

From the given options:

a. Barium (Ba) or Bismuth (Bi): Bismuth (Bi) has a larger atomic radius than Barium (Ba).

b. Beryllium (Be) or Barium (Ba): Barium (Ba) has a larger atomic radius than Beryllium (Be).

c. Rubidium (Rb) or Chlorine (Cl): Rubidium (Rb) has a larger atomic radius than Chlorine (Cl).

d. Calcium (Ca) or Krypton (Kr): Calcium (Ca) has a larger atomic radius than Krypton (Kr).

e. Rubidium (Rb) or Iodine (I): Rubidium (Rb) has a larger atomic radius than Iodine (I).