Look back at the abbreviated periodic table of the elements in Figure 2.5B. If two elements are in the same row, what do they have in common? If two elements are in the same column, what do they have in common? Would you predict that elements in the same row or the same column will have similar chemical properties? Explain.

Question

Electron distribution diagrams for the first 18 elements in the periodic table.

Accepted Answer

Hi everyone here's our next problem. It says the vertical columns in the periodic table are called blank, whereas the horizontal rows are referred to as blank. The vertical columns of the periodic table are called groups. And we can help to remember that we think of a group as something that has similarities. And the groups are really important in the periodic table because members of the same group have the same number of valence electrons. Of course that's really important how they form bonds and various properties they have. So that can help to remember that group that this group behave similarly. Think of like the cool group with an already group. So the groups in the periodic table as vertical columns have the same number of valence electrons. So we know that our first name, our first word fill in the first blank must be groups. So we see a choice A. Has groups in the first position. Um All the other answer choices. Group choice B has periods, choice, he has shells, choice D. Has blocks. So none of those have the correct word groups in the first place. So on a test I just pick choice A and move on. But we're going with a more thorough explanation. So I'll keep going. But just knowing the interests of speed, you would have ruled everything out except for choice A. At this point, the horizontal rows are referred to as periods. So we get our name, the periodic table and those periods are in general the same energy level, you're filling valence shells and you move from left to right in a period in a period. So group A choice A. Is correctly labeled groups and periods in the correct order. So that is our answer choice A choice B has periods and groups right, right words wrong order. Which is why it's not our correct answer choice C. Has the words shells and sub shells with the shells referred to those pathways around the nucleus that electrons traveling um their number like 1234. And then the sub shells are the pathways and electrons within those shells. Um Those groups like S and P. The different orbital's, so that's not a correct answer. And then finally, choice these blocks and groups as the two words blocks referred to those section sections of the periodic table um that correspond to different orbital's. So the first block, the first two rows, the first two groups on the left are the S orbital is being filled and then you go on to the S. P. D. F. Orbital's and each block reflects one of those orbital's being filled as you go from left to right. So that's not our correct answer either. So again, the vertical columns of the periodic table are called, do I say groups whereas the horizontal rows referred to as periods. See you in the next video

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Key Concepts

Periodic Table Structure

Chemical Properties

Electron Configuration