Problem: Arrange the following ions, Sc3+, Cl1-, K1+, S2- in order of increasing ionic size.a. Sc3+ &lt; K1+ &lt; S2- &lt; Cl1-b. K1+ &lt; Sc3+ &lt; Cl1- &lt;  S2-c. Sc3+ &lt; K1+ Cl -1 &lt; S2-d. K1+ &lt; Sc3+ &lt; S2- &lt; Cl1-

FREE Expert Solution
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FREE Expert Solution

Recall that ionic radius is the size of an ion. The trend for the ionic radius is as follows: it increases from right to left and down a period in the periodic table. Ionic radius also increases with an increasing number of electrons.

Recall that the atomic number of an element gives us the number of electrons of the neutral element.

93% (138 ratings)
Problem Details

Arrange the following ions, Sc3+, Cl1-, K1+, S2- in order of increasing ionic size.

a. Sc3+ < K1+ < S2- < Cl1-

b. K1+ < Sc3+ < Cl1- <  S2-

c. Sc3+ < K1+ Cl -1 < S2-

d. K1+ < Sc3+ < S2- < Cl1-

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: Ionic Radius concept. You can view video lessons to learn Periodic Trend: Ionic Radius Or if you need more Periodic Trend: Ionic Radius practice, you can also practice Periodic Trend: Ionic Radius practice problems .

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