.
Russian Chemist, Lothar Meyer, invented the modern version of the periodic table in 1869.
(Points : 2)
True
False

Question 2. 2.
One success of Johann Döbereiner's law of triads was that it organized most of the known elements into three-element groups based on similarities in their properties.
(Points : 2)
True
False

Question 3. 3.
Which of the following is not an example of a group/family of elements on the periodic table?
(Points : 3)

alkali metals

halogens

actinides

alkaline earth metals

Question 4

Question

.
Russian Chemist, Lothar Meyer, invented the modern version of the periodic table in 1869.
(Points : 2)
       True
       False

Question 2. 2.
One success of Johann Döbereiner's law of triads was that it organized most of the known elements into three-element groups based on similarities in their properties.
(Points : 2)
       True
       False

Question 3. 3.
Which of the following is not an example of a group/family of elements on the periodic table?
(Points : 3)
      
alkali metals

      
halogens

      
actinides

      
alkaline earth metals


Question 4

wolfe8 · Answer

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