Question

An element has mass number 80 and contains 35 electrons. Fill in the blanks Number of protons_____ Number of neutrons _____ Atomic number _____ Name _____ Nuclide symbol (isotope) _____ Located on period _____& column _____ Type of element _____ Belongs to the group called _____ A compound has a melting point of 133.0C degree and boiling point of 272.0 C degree. This compound is kept at 119 F. What is the physical state of this compound at this temperature? Is it liquid, solid or gas? Show your work!

Answer 1

5.An element has mass number 80 and aontains 35 electrons. Number of protons: 35 number of neutronsL80-35) = 45 Atomic number: 35 Name: Bromine Nuclide symbol(isotope): Br Located on period: 4& column: 17 Type of element: nonmetal belongs to the group called: halogen 6.119F = (119-32) times 5/9 degree C = 48.33degreeC so, the compound is kept at 48.33 degree C but the m.p of the compound is 133.0 degreeC AND B.P IS 272.0 DEGREEc