b. a noble gas with 18 protons in the nucleus c. a halogen with 85 protons and 85 electrons d. a member of the alkali metal family whose most stable ion contains 18 electrons e. a member of 17 whose most stable ion contains 10 electrons 9. Suppose that a stable element, atomic number 119, symbol Pe, name Petrassium, is discovered. a. Would Pe be a metal or a non-metal? Explain/justify your answer. b. What would be the most likely charge of the Pe ion in stable ionic compounds? c. An isotope of Petrassium has a mass number of 291. How many neutrons does it have? d. Write the formula for the compound formed between Pe and the carbonate (CO3) ion.
b. a noble gas with 18 protons in the nucleus c. a halogen with 85 protons and 85 electrons d. a member of the alkali metal family whose most stable ion contains 18 electrons e. a member of 17 whose most stable ion contains 10 electrons 9. Suppose that a stable element, atomic number 119, symbol Pe, name Petrassium, is discovered. a. Would Pe be a metal or a non-metal? Explain/justify your answer. b. What would be the most likely charge of the Pe ion in stable ionic compounds? c. An isotope of Petrassium has a mass number of 291. How many neutrons does it have? d. Write the formula for the compound formed between Pe and the carbonate (CO3) ion.
ap_chemistry_summer_assignment_2018-2019.docx