3. The atomic number of an element whose atoms have 9 electrons and 10 neutrons is ? 4.One isotope of carbon has 6 protons and 6 neutrons. The number of protons and neutrons of a second isotope of carbon would be ? 10. A certain element is a gas and dose not conduct electricity or heat. Which of the followin is a possible number of valence electrons for the atoms of this element? is it A. 1, B.2,C.3,OR D.6 11.Based on its position in the periodic table, the most likely charge of an iodide ion is A.1+, B.1-,C.2+or D.7-
2007-12-28
06:32:55
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2 answers
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asked by
sindiercanales
1
in
Chemistry