Question: answer all please Q16: For each atom give the following information: [1] the atomic number; a. 613C b. 12151Sb [2] the mass number; [3] the

answer all please

Q16: For each atom give the following information: [1] the atomic number; a. 613C b. 12151Sb [2] the mass number; [3] the number of protons; [4] the number of neutrons; [5] the number of electrons. Q17: Give the period and group number for each element: (a) oxygen; (b) calcium; (c) phosphorus; (d) platinum; Period: Group: Q18: Identify the element fitting each description. a. an alkali metal in period 4 b. a main group element in period 5 and group 2A c. a second-row element in group 7A

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