The order of atomic and ionic size depends on the number of electron shells and the effective nuclear charge. The more electron shells an atom or ion has, the larger it is. The higher the effective nuclear charge, the smaller the atom or ion is.

Here are the atoms and ions listed: K+, K, Rb

1. K (Potassium Atom): Potassium in its neutral state has 19 electrons distributed in 4 shells.

2. K+ (Potassium Ion): When Potassium loses an electron to become K+, it has 18 electrons distributed in 3 shells. The loss of an electron increases the effective nuclear charge, pulling the remaining electrons closer to the nucleus and making the ion smaller than the neutral atom.

3. Rb (Rubidium Atom): Rubidium in its neutral state has 37 electrons distributed in 5 shells.

So, in order of decreasing size, the atoms and ions should be listed as: Rb, K, K+

Question

The order of atomic and ionic size depends on the number of electron shells and the effective nuclear charge. The more electron shells an atom or ion has, the larger it is. The higher the effective nuclear charge, the smaller the atom or ion is.

Here are the atoms and ions listed: K+, K, Rb

1. K (Potassium Atom): Potassium in its neutral state has 19 electrons distributed in 4 shells.

2. K+ (Potassium Ion): When Potassium loses an electron to become K+, it has 18 electrons distributed in 3 shells. The loss of an electron increases the effective nuclear charge, pulling the remaining electrons closer to the nucleus and making the ion smaller than the neutral atom.

3. Rb (Rubidium Atom): Rubidium in its neutral state has 37 electrons distributed in 5 shells.

So, in order of decreasing size, the atoms and ions should be listed as: Rb, K, K+

Knowee AI · Accepted Answer

The order of atomic and ionic size depends on the number of electron shells and the effective nuclear charge. The more electron shells an atom or ion has, the larger it is. The higher the effective nuclear charge, the smaller the atom or ion is.

Here are the atoms and ions listed: K+, K, Rb

1. K (Potassium Atom): Potassium in its neutral state has 19 electrons distributed in 4 shells.

2. K+ (Potassium Ion): When Potassium loses an electron to become K+, it has 18 electrons distributed in 3 shells. The loss of an electron increases the effective nuclear charge, pulling the remaining electrons closer to the nucleus and making the ion smaller than the neutral atom.

3. Rb (Rubidium Atom): Rubidium in its neutral state has 37 electrons distributed in 5 shells.

So, in order of decreasing size, the atoms and ions should be listed as: Rb, K, K+

Re-order the list in the table below, if necessary, so that the atoms and ions in it are listed in order of decreasing size.atoms and ions atoms and ions in orderof decreasing size, K+, KRb , ,

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