Na 1s 2 2s 2 2p 6 3s 1 one give one ends in one box

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3. Na 1s 2 2s 2 2p 6 3s 1 one give one ends in one box with one arrow Ti [Ar] 4s 2 3d 2 two lose 2 ends in five boxes arrows in two N 1s 2 2s 2 2p 3 five gain 3 ends one arrow in each of 3 boxes Pd [Kr]5s 2 4d 8 two lose 2 ends five boxes 8 electrons 4. (a) 0 (b) 1 (c) 2 (d) 3 5. 32 6. Al 7. I changed the element to Ti: 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 2 , 1s 2 2s 2 2p 6 3s 2 3p 6 3d 2 4s 2 , [Ar]4s 2 3d 2 8. 3d electrons 9. sphere, dumbbell 10. s,p, and d 11. 2 12. Si 13. K 14. Electrons fill from lowest to highest energy electrons 15. When considering the p, d, or f sublevel, electrons fill singly with parallel spins. ( in other words one in each box until they have to pair) 16. 17. (a) K (b) Li
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Mystery Periodic Table The following elements belong together in families as grouped below. The elements as listed are not necessarily in order. The letters are not the normal symbols for the elements. BHG, JENU, LVQC, XAD, ZPR, OIT, MFS, YKW These letters represent the actual elements on the periodic table. You are to arrange them in the chart below in the correct families and periods. Remember, hydrogen is not a member of family IA. 1. A has a total of 4 electrons 2. B has more electrons than any element in its family. 3. D loses two electrons in a chemical reaction. 4. E is the alkali metal with the least electrons. 5. F has 4 electrons in the 4 th energy level. 6. G gains 2 electrons in a reaction and causes Fe to rust 7. H has two unpaired electrons in its outer sublevel. 8. I has the smallest atomic mass in its group. 9. J is the largest metallic element listed. 10. K is the most abundant element in the earth’s atmosphere. 11. L is the noble gas with the most metallic character. 12. N has one less proton than a noble gas. 13. Ions of element P are found in table salt. 14. Q is the smallest and least reactive in the family. 15. R is the smallest non-metal not including the noble gases. 16. S is in every living organism on earth. 17. T has 3 electrons in its third energy level. 18. U is an alkali metal. 19. V is larger than C. 20. W is in period 4. 21. X is the largest and most reactive alkaline earth element listed. 22. Z is a halogen. A 8
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N Q E A I S K G R C U D T M Y H P V J X O F W B Z L
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Chapter 7 Directions for Lewis Dot NOTICE: To successfully complete a drawing, you must follow each step in order. Step 1 Count the valence electrons ( outer energy level electrons)- the Roman numeral at the top of the group on the periodic table represents the valence electrons. Using H 2 O as an example it would be 8 ( 6 for O and 1 for each H) Step 2 Hook all atoms to central atom with single bonds. Use a line ( - ) to represent the bond. Remember that the line is actually two dots. Again using water as an example: H- O - H. The line between the H and O counts as two electrons for the H and two electrons for the O. Usually the central atom will be the single atom. Using H 2 O as the example, there is one O and two H's, so O is the central atom.
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