Question

Be sure to answer all parts. For each neutral atom, fill in the blanks in the table below. olnts 121 Symbol Sb 51 eBook Print References Protons 14 Neutrons 15 118 Electrons 79 Mc Graw Hill K Prev 13 of 20 EEE Next

Answer 1

Hint: - 1. Representation of atom - A_X_Z Here - x - atomic symbol z - atomic No. (No. pf protons or/No. of electrons) A = atomic mass (No. of protons + Neutrons) 2. No. of proton = No. of electrons (1) calculation for column 1st protons = 14. So, electron will be 14 atomic No. = No. of proton or No. of electrons so, atomic No. 14 atomic mass = No. of Neutron + protons atomic mass = 14 + 15 = 29 Representation = A_X_Z for atomic No. 14 atomic symbol will be si \r\n calculation for column 2nd - 121_sb_51 No.of protons = 51 No. of electrons = 51 No. of Neutrons = atomic mass - No. of protons No. of Neutrons = 121 - 51 = 70 (3) calculation for column 3rd: - Neutrons = 118 atomic No. = Electrons = 79, so protons = 79 atomic mass = 118 + 79 = 197 atomic representation for atomic No. 79