Multiple ChoiceWhich of the following is the atomic number of fluorine (symbol F) on the periodic table?63views
Multiple ChoiceWhich of the following is the symbol for the element located in group 4A (14) and period 2 of the periodic table?56views
Multiple ChoiceWhich of the following lists contains only correct chemical symbols for three different elements?66views
Multiple ChoiceWhich of the following is the correct chemical symbol for the element with 32 protons?42views
Multiple ChoiceWhich of the following is the correct chemical symbol for the element with atomic number 12 among the first 20 elements of the periodic table?64views
Multiple ChoiceWhich of the following is the atomic number of mercury (Hg) on the periodic table?74views
Multiple ChoiceWhich one of the following elements was not easily spotted by ancient cultures?73views