20. Which is not the atomic number of an alkali metal: a. 87 b. 37 c. 55 d. 73 2
ID: 563634 • Letter: 2
Question
20. Which is not the atomic number of an alkali metal: a. 87 b. 37 c. 55 d. 73 21. Which group(s) combines with an halogen to form a salt a. b. I d. IV 22. The element in Period 3 with the most metallic character is 23. The elements known as the alkali metals are found in Column 24. Which element in Period 4 has both metallic and nonmetallic properties 25. These clements combine with metals to form salts, thus they are called 26. The majority of the elements in the Periodic Table are 27, which atomic # in Period 3 is the most active nonmetal a. b. 12 d. 18Explanation / Answer
20. d) 73 is atomic number of Tantalam which is not alkali metal.
21. I , II, III, IV. All metals of these groups combine with halogens to form salts.
22. Sodium (Na) is the most metallic element in period 3.
23. Alkali metals are found in column 1.
24. Germanium in period 4 has both metallic and non metallic properties and hence is a metalloid.
25. Halogens( salt former)
26. Most of the elements in the periodic table are Metals.
27. Chlorine is the most active non-metal in perios 3.
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