1) The electron configuration of the element with atomic number 15 a) Phosphorus b) 2,8,5 c) 5,8,2 d) 2.1 2) The electron configuration of Oxygen a) 2,6 b) 6,2 c) 2,8,8,2 d) O 3) The electron configuration of Sodium a) Na b) 23 c) 2,8,2 d) 2,8,1 4) The electron configuration of Hydrogen a) 0,1 b) H c) 1 d) 2,8,1 5) The electron configuration of the element in Group 4 and Period 3. a) 4,3 b) 2,4,3 c) 2,8,4 d) Nucleus 6) The electron configuration of the element with the symbol K. a) 2,8,8,1 b) 39 c) 2,8,1 d) Electron 7) The electron configuration of the element that makes your voice squeaky! a) 2,8,1 b) 2 c) 4 d) Helium 8) The electron configuration of Nitrogen. a) 2,5 b) 14 c) 17 d) 2,7 9) The electron configuration of the element found in Group 2 Period 2 a) 2 b) 2,2,8 c) 2,2 d) Be 10) The electron configuration of the element with atomic number 20 a) 2,8 b) 2,8,8,2 c) Calcium d) Proton 11) The electron configuration of the third noble gas. a) 2,8 b) 2,8,8 c) 28 d) Argon 12) The electron configuration of the element with an atomic mass of 19. a) 2,7 b) 10 c) 2,8,7 d) F 13) The electron configuration of a noble gas found in street lights. a) 2,8 b) 2,8,8 c) Neon d) Ne 14) How many outer electrons does an element in group 1 have? a) 1 b) 7 c) 0 15) What is the valency of an element in group 1?How many outer electrons does an element in group 1 have? a) 1 b) 7 c) 0

Electron configurations

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