How many valence electrons does an atom of rubidium (rb atomic number 37) have? a. one b. five c. six d.37
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This active feature of earth's crust in building mountain ranges as well as islands. this feature is a a) cavern. b) earthquake. c) mountain. d) volcano.

What are the primary responsibilities of a chemical engineer involved in "r& d"? develop large scale manufacturing operations discover new products and processes training of new chemists determine products needed by consumers

If two atoms are bonded to a central atom with no lone pairs,how will they be arranged