Chemistry

employment B7. How do you think the size of atoms will straight thrust from back to bottom within a chemical family? At the top of the table, the elements have a few negatrons as bingle act down through a group/family, to a greater extent negatrons atomic round 18 provideed and the rime of energy directs ar added to form the electron configuration. Activity B8. atomic number 1 gas constant: 53 picometers. Lithium radius: 167 picometers. atomic number 11 radius: 190 picometers. Activity B9: as you go from the top to the bottom of a chemical family the atomic radius increase. Activity 10A the atomic radius decreases as you move crosswise a period in the periodic table because the negativity pulls the outside shell electrons in to a greater extent strongly. plainly when theres barely 1 electron in the outer shell, it is much baffling to pull it in. the positive charge in in the meat that attracts the outer shell electrons towards it and so it decre ases as you move crosswise the table. BUT as you move DOWN the table, much and to a greater extent shells and being added which means its getting bigger as you go DOWN but smaller as you go across. this is because the more shells there are, the harder it is for the karyon to pull it in because its more shape up away Activity 10B Each tender energy level is farther from the nucleus.

The more energy levels that are present, the farther from the nucleus they are. Activity 11B Question: How are the electron configurations of elements beyond are determined? The same way that ones aheadhand argon are determin ed. Find the noble gas before the element yo! u are doing. This becomes your base for the electron configuration so you can pass over counting from that element number. cerebrate the subshells 1s 2s 2p 3s 3p 4s 3d 4p etc s=2, p=6, d=10, f=14 ......so just keep make-up till you reach the number of the element. So eg Selenium (Se) would be- 1s(2) 2s(2) 2p(6) 3s(2) 3p(6) 4s(2) 3d(10) 4p(4) . entirely the numbers in the brackets add up to Seleniums Atomic number. A shorter way of writing it would be [Ar] 4s(2) 3d(10) 4p(4)...If you want to get a full essay, order it on our website: BestEssayCheap.com

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