(02.02 lc)\nmendeleev used his arrangement of elements in order of increasing mass and repeated properties…

(02.02 lc)\nmendeleev used his arrangement of elements in order of increasing mass and repeated properties to predict the mass and properties of undiscovered elements.\n\na true\n\nb false\n\nquestion 2 (1 point)\n(02.02 lc)\nmendeleevs arrangement of elements in the periodic table was based on the observations and experiments of his predecessors who studied the mass and properties of elements.\n\na true\n\nb false\n\nquestion 3 (1 point)\n(02.02 lc)\nmendeleevs periodic table shocked the scientific community because it contradicted earlier findings about element mass and properties.\n\na true\n\nb false\n\nquestion 4 (1 point)\n(02.02 mc)\nusing the periodic table, which of the following elements is most likely to have similar properties as calcium, and why?\n\na potassium (k), because they are both alkali metals\n\nb magnesium (mg), because they are both alkaline earth metals\n\nc scandium (sc), because they are both in the fourth period\n\nd argon (ar), because they both have three energy levels

(02.02 lc)\nmendeleev used his arrangement of elements in order of increasing mass and repeated properties to predict the mass and properties of undiscovered elements.\n\na true\n\nb false\n\nquestion 2 (1 point)\n(02.02 lc)\nmendeleevs arrangement of elements in the periodic table was based on the observations and experiments of his predecessors who studied the mass and properties of elements.\n\na true\n\nb false\n\nquestion 3 (1 point)\n(02.02 lc)\nmendeleevs periodic table shocked the scientific community because it contradicted earlier findings about element mass and properties.\n\na true\n\nb false\n\nquestion 4 (1 point)\n(02.02 mc)\nusing the periodic table, which of the following elements is most likely to have similar properties as calcium, and why?\n\na potassium (k), because they are both alkali metals\n\nb magnesium (mg), because they are both alkaline earth metals\n\nc scandium (sc), because they are both in the fourth period\n\nd argon (ar), because they both have three energy levels

Answer

Brief Explanations:

  • Question 1: Mendeleev arranged elements by increasing mass and periodic - repeating properties to predict new elements. This is a well - known fact in the history of the periodic table.
  • Question 2: Mendeleev built on the work of his predecessors who studied element mass and properties to create his periodic table.
  • Question 3: Mendeleev's periodic table was in line with earlier work and refined it, not contradicted it.
  • Question 4: Elements in the same group have similar chemical properties. Calcium and magnesium are both alkaline earth metals (Group 2) and thus have similar properties.

Answer:

  1. a. True
  2. a. True
  3. b. False
  4. b. Magnesium (Mg), because they are both alkaline earth metals