SCIENCE

# Given atomic symbol a x b determine the number of

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Nickel –57 14.________________ Given atomic symbol [ A X b ] determine the number of protons, electrons and 34 S 16 36 Mg 112 14 C 6 57 S 28

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Z neutrons for each of the following : 15. __ 28 ___ protons; __ 26 __ electrons; and __ 30 __ neutrons 15. 58 X 2+ 28 16. ___ 6 __ protons; __ 10 _ electrons; and __ 8 __ neutrons 16. 14 X 4- 6 17. ___ 19 __ protons; __ 18 __ electrons; and __ 21 __ neutrons 17. 40 X 1+ 19 18. __ 17 __ protons; __ 18 __ electrons; and __ 41 __ neutrons 18. 58 X 1- 17 COMPLETE THE FOLLOWING CHART OF ATOMS AND IONS ELEMENT CHARGE ATOMIC # MASS # PROTONS ELECTRONS K 1 + 19 39 19 18 NITROGEN 3- 7 14 7 10 HELIUM 0 2 4 2 2 coppper 2+ 29 64 29 27 COMPLETE THE FOLLOWING CHART OF ATOMS AND ISOTOPES ELEMENT ATOMIC # MASS # PROTONS ELECTRONS NEUTRONS SILVER 47 108 47 47 61 ARSENIC 33 75 33 33 42 Cobalt 27 58 27 27 31 Potassium 19 39 19 19 20 ANTIMONY 51 122 51 51 71 H-3 or TRITIUM 1 3 1 1 2 Copper 29 64 29 29 35 IRON 26 58 26 26 32 Be able to calculate Average Atomic Mass given isotopes and their % abundance:
Element X exists in the form of three different isotopes: X-22, X-23, and X-24. They occur with the following % abundances: 88.6%, 1.4%, and 10.00% respectively. What is Element X’s average atomic mass? (22)(.886)= 19.492 (23)(.014)= .322 (24)(.10)= 2.4 22.214 Periodic Table: Make sure you know how to predict ion charge using the periodic table: 1. Do metals tend to form cations or anions? Cations 2. What type of ion do non-metals form? Negative or positive? Negative, Anions What charges would you predict for the following elements: Phosphorus (P):__ -3 __ Sulfur (S): __ -2 ____ Strontium (Sr):__ +2 ___ Sodium (Na):___ +1 ___ Know how to locate groups on the periodic table: 1. Where are the noble gasses located? Group 8A 2. The vertical columns on the periodic table are called ___ Groups __________________. 3. The horizontal rows on the periodic table are called ____ periods __________________.
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