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11 Nov 2019
2. Circle the most appropriate answer (- 1 points if not doe 3. Write the letter on the blank in the left margin of the question number (-1 points if not done) 1. What is the noble gas core for CI? e. Kr d. Ar a. Xe b. Ne c. Rn Nb atom? ä¸ä¸, which of the following electron configurations correctly represents the a. [Kr] 3d d. [Ar] 5s 4d e. [Ar] 4s 3d b. [Kr] 5s'4d _3. What element is represented by the electron configuration [Ar] 4s3d"4p? a. T b. 2r c. Sn d. Ga e. In 4. Alkali Metals exhibit the lowest first ionization energy. Which family of elements do you expect to exhibit the highest first ionization energy (IE:)? a. Halogens b. Pnictogens c. Chalcogens d. Noble Gases e. Alkaline Earth 5, which of the following best describes why ë´ does not change significantly from top to bottom within a group? a. The number of protons in the nucleus does not change significantly c. There are more valence shells b. There are more completed electron shells d. There are fewer completed electron shells -. Give the family of elements in the periodic table that contains the least metallic elements. a. Halogens b. Pnictogens c·Cha!cogens d. Noble Gases e. Alkaline Earth _ . Determine the number of moles of C in 8221 g of carbon. a. 2.082 mol b. 2.623 mol c. 0.6851 mol d. 1.370 mol e.1.055 x 10 mol 8. Determine the mass in grams of 1.312 mol of Sc. b. 5.250 g a. 27.55 g c. 7.871g d. 0.3380 g e. 58.99 g 9. Write the electron configuration of a tin (Sn) atom (Z- 50). b. e. 1s 2s 2p 3s 3p
2. Circle the most appropriate answer (- 1 points if not doe 3. Write the letter on the blank in the left margin of the question number (-1 points if not done) 1. What is the noble gas core for CI? e. Kr d. Ar a. Xe b. Ne c. Rn Nb atom? ä¸ä¸, which of the following electron configurations correctly represents the a. [Kr] 3d d. [Ar] 5s 4d e. [Ar] 4s 3d b. [Kr] 5s'4d _3. What element is represented by the electron configuration [Ar] 4s3d"4p? a. T b. 2r c. Sn d. Ga e. In 4. Alkali Metals exhibit the lowest first ionization energy. Which family of elements do you expect to exhibit the highest first ionization energy (IE:)? a. Halogens b. Pnictogens c. Chalcogens d. Noble Gases e. Alkaline Earth 5, which of the following best describes why ë´ does not change significantly from top to bottom within a group? a. The number of protons in the nucleus does not change significantly c. There are more valence shells b. There are more completed electron shells d. There are fewer completed electron shells -. Give the family of elements in the periodic table that contains the least metallic elements. a. Halogens b. Pnictogens c·Cha!cogens d. Noble Gases e. Alkaline Earth _ . Determine the number of moles of C in 8221 g of carbon. a. 2.082 mol b. 2.623 mol c. 0.6851 mol d. 1.370 mol e.1.055 x 10 mol 8. Determine the mass in grams of 1.312 mol of Sc. b. 5.250 g a. 27.55 g c. 7.871g d. 0.3380 g e. 58.99 g 9. Write the electron configuration of a tin (Sn) atom (Z- 50). b. e. 1s 2s 2p 3s 3p
Jean KeelingLv2
1 Oct 2019