Consider an ion with the symbol Y³⁻ formed from a representative ...

Question

Consider an ion with the symbol Y³⁻ formed from a representative element. (6.1, 6.2, 6.3)c. If Y is in Period 3, what is the element?

Accepted Answer

Welcome back everyone. A representative element forms an ion with the symbol X two minus. If X is in period three provide the name of the element. We're going to need to utilize our periodic tables. So I'll paste one on the screen and we need to begin by recalling that for representative elements, we're going to find them in our S block and P block of our periodic table. So between group one A to group eight, a note that our D block lies in between our S and P block and only contains our transition metals between groups three B to group two B. So note that our groups are the columns going down our periodic table. Whereas the period numbers are the rows going across our periodic table. So given or based on our given symbol X two minus, we want to recognize that the two minus in our exponent given is an indication that we will loot or that we will gain two electrons. So a negative charge we should recall corresponds to an anion and an anion means a gain of that number of electrons based on the charge. Next, we want to recall that specifically in our P block across groups three A through seven A, we have corresponding ion charges formed by elements in those groups. Beginning with group three A, we want to recall that this will correspond two atoms that will typically have a plus three charge. Group 4 a corresponds to atoms that will have a - charge. For anions. For group five A, we have elements that will typically have a minus three charge for their anions. And for group six A, we will typically have elements that form a minus two charge for their anions. As we saw with our symbol X two minus. Next, in group seven A, we will typically have elements that will form minus one anions. And based on each of these ion charges, this will represent the number of either gained or lost in this case of plus three ions electrons in order to become more stable or to ultimately form a normal noble gas configuration, which are our atoms in group eight A. So as we saw, we have a minus two anion for our symbol X two minus. And so therefore, if our atom X is in period three, we want to go across period three and all the way to the group that corresponds to a minus two anion in which we will hit the following atom where we see a capital S for sulfur. So we can note down that in group six, a period three, we have our atom, which would be sulfur. Capital S. And so for our final answer, the name of our element with the symbol X two minus or in this case, it would be capital S two minus is going to be sulfur. As our final answer. I hope this made sense and let us know if you have any questions.

Consider an ion with the symbol Y³⁻ formed from a representative element. (6.1, 6.2, 6.3)c. If Y is in Period 3, what is the element?

Key Concepts

Ionic Charge

Periodic Table

Representative Elements

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