c.) bromine\nsymbol: \ntotal # of electrons: (hint: in a neutral atom electrons = protons)\nelectron…

c.) bromine\nsymbol: \ntotal # of electrons: (hint: in a neutral atom electrons = protons)\nelectron configuration:\n\nd.) nickel\nsymbol: \ntotal # of electrons: (hint: in a neutral atom electrons = protons)\nelectron configuration:\n\ne.) rhodium\nsymbol: \ntotal # of electrons: (hint: in a neutral atom electrons = protons)\nelectron configuration:\n\nf.) actinium\nsymbol: \ntotal # of electrons: (hint: in a neutral atom electrons = protons)\nelectron configuration:\n\ng.) beryllium\nsymbol: \ntotal # of electrons: (hint: in a neutral atom electrons = protons)\nelectron configuration:\n\nh.) mercury\nsymbol: \ntotal # of electrons: (hint: in a neutral atom electrons = protons)

c.) bromine\nsymbol: \ntotal # of electrons: (hint: in a neutral atom electrons = protons)\nelectron configuration:\n\nd.) nickel\nsymbol: \ntotal # of electrons: (hint: in a neutral atom electrons = protons)\nelectron configuration:\n\ne.) rhodium\nsymbol: \ntotal # of electrons: (hint: in a neutral atom electrons = protons)\nelectron configuration:\n\nf.) actinium\nsymbol: \ntotal # of electrons: (hint: in a neutral atom electrons = protons)\nelectron configuration:\n\ng.) beryllium\nsymbol: \ntotal # of electrons: (hint: in a neutral atom electrons = protons)\nelectron configuration:\n\nh.) mercury\nsymbol: \ntotal # of electrons: (hint: in a neutral atom electrons = protons)

Answer

Explanation:

Step1: Recall element symbols

Use periodic - table knowledge to find symbols.

Step2: Determine electron number

Atomic number = number of protons = number of electrons in neutral atom.

Step3: Write electron configuration

Follow Aufbau principle, Pauli - exclusion principle, and Hund's rule.

Answer:

C. Bromine: Symbol: Br Total # of Electrons: 35 Electron Configuration: 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁵ D. Nickel: Symbol: Ni Total # of Electrons: 28 Electron Configuration: 1s²2s²2p⁶3s²3p⁶4s²3d⁸ E. Rhodium: Symbol: Rh Total # of Electrons: 45 Electron Configuration: 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s¹4d⁸ F. Actinium: Symbol: Ac Total # of Electrons: 89 Electron Configuration: 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p⁶6s²4f¹⁴5d¹⁰6p⁶7s²6d¹ G. Beryllium: Symbol: Be Total # of Electrons: 4 Electron Configuration: 1s²2s² H. Mercury: Symbol: Hg Total # of Electrons: 80 Electron Configuration: 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p⁶6s²4f¹⁴5d¹⁰