It's your choice: test your chemistry IQ! Answer the following questions about elements and the periodic table.1. Name that element! 2, Which of the following elements is found in the same group as zinc (group 12)? A Hafnium (Hf) B Tin (Sn) C Iodine (I) D Cadmium (Cd) 3. Which of the following elements is a transition metal? A Calcium (Ca) B Astatine astatine (ăs`tətēn,–tĭn) [Gr.,=unstable], semimetallic radioactive chemical element; symbol At; at. no. 85; at. wt. of most stable isotope 210; m.p. 302°C; (estimated); b.p. (At) C Hassium hassium (hăs`ēəm, häs`–), artificially produced radioactive chemical element; symbol Hs; at. no. 108; mass number of most stable isotope 265; m.p., b.p., sp. gr., and valence unknown. (Hs) D Radon (Rn) 4. An amalgam is A a combination of the mystery element and a metal. B the negative end of a battery. C a mineral. D all of the above. 5. Which of the following is found in nature as a liquid? A Bromine (Br) B Hydrogen (H) C Technetium (Tc) D Silver (Ag) 6. The element polonium polonium (pəlō`nēəm), radioactive chemical element; symbol Po; at. no. 84; mass no. of most stable isotope 209; m.p. 254°C;; b.p. 962°C;; sp. gr. about 9.4; valence +2 or +4. (Po) has four more protons than --. A Chromium (Cr) B Mercury (Hg) C Dubnium dubnium (d  b`nēəm), artificially produced radioactive chemical element; symbol Db; at. no. 105; mass number of most stable isotope 262; m.p., b.p., and sp. gr. unknown; valence +5. (Db) D Seaborgium seaborgium (sēbôr`gēəm), artificially produced radioactive chemical element; symbol Sg; at. no. 106; mass number of most stable isotope 266; m.p., b.p., sp. gr., and valence unknown. (Sg) CHARGED: A cloud of 80 electrons surrounds the nucleus of the mystery element. Its nucleus (gray) contains 80 protons and 80 neutrons. |
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