Chemistry 100 Exam 2 Questions With Detailed Answers Pass Guaranteed

Octet rule - correct answers Atoms lose, gain, or share electrons to become a stable, noble gas 2 - correct answers How many electrons must be lost by a main group element to form a cation with a 2+ ionic charge? 82 - correct answers How many total electrons are present in the polyatomic ion, hydrogen phosphate HPO42-? Ca^2+ - correct answers What is the ion symbol for an atom with twenty protons and eighteen electrons c.) Iron and chlorine - correct answers Which of the following pairs of elements will form an ionic compound? a.) Sulfur and oxygen b.) Copper and iron c.)Iron and chlorine d.) Bromine and oxygen e.) magnesium and lead The A^2- anion - correct answers Which has the larger radius? the A atom or the A^2- ion? +3 - correct answers What is the charge on the iron ion in the compound Fe2O3? S^2- - correct answers What is the ion symbol for an atom with 16 protons and 18 electrons Magnesium Fluoride - correct answers What is the proper name for MgF2 Copper (I) chloride - correct answers What is the proper name for CuCl Bromine - correct answers What period 4 element forms an ion with a -1 charge PbCO3 - correct answers What is the formula for the ionic compound formed from the lead (II) ion and the carbonate ion Sn(CN)4 - correct answers What is the chemical formula of tin (IV) cyanide P2O7^4- - correct answers The diphosphate ion is a biologically important polyatomic ion. If the ionic compound calcium diphosphate has the formula Ca2P2O7, what is the correct representation of the ion symbol of the diphosphate ion