Protons, neutrons, electrons

Use the periodic table to fill in the blanks, then answer the questions below. Atomic Symbol Atomic Number Protons Neutrons Electrons Mass Number B 5 5 6 5 11 Na 11 11 12 11 23 Ga 31 31 39 31 70 Y 39 39 50 39 89 Cu 29 29 35 29 64 Tc 43 43 56 43 99 Pb 82 82 125 82 207 Yb 70 70 103 70 173 Ac 89 89 138 89 227 Mo 42 42 54 42 96 Ba 56 56 81 56 137 Be 4 4 5 4 9 He 2 2 2 2 4 H 1 1 0 1 1 Lu 71 71 104 71 175 The three types of subatomic particles are protons, with a positivecharge which are located in the nucleus, electrons, with a negativecharge located in orbitals around the nucleus, and neutronswith a neutralor no charge, which are also located in nucleus. Which two subatomic particles make up the majority of the mass of an atom and have approximately the same mass? (THERE ARE TWO ANSWERS, SELECT BOTH THAT APPLY!) Protons Electrons Neutrons What 3 columns in the table above ALWAYS have the same number for a given element? (SELECT 3 CHOICES) Atomic Symbol Atomic Number Protons Neutrons Electrons Mass Number How does the number of protons compare to the number of electrons in an ATOM? (select all that apply) There are more protons than electrons There are more electrons than protons The number of protons and electrons are equal