Question

Ruthenium (Ru) is commonly used in the manufacture of platinum alloys. What is the ground-state electron configuration for an atom of ruthenium? 1. Analyze the Problem Known: Unknown: Determine the number of additional electrons a ruthenium atom has compared to the nearest preceding noble gas, and then write out ruthenium's electron configuration. 2. Solve for the Unknown From the periodic table, ruthenium's atomic number is determined to .Thus a ruthenium atom contains electrons. The noble gas be preceding ruthenium is krypton (Kr), which has an atomic number of 36. Represent ruthenium's first 36 electrons using the chemical symbol for krypton written inside brackets. The first 36 electrons have filled out the 1s, 2s, 2p., 3s, 3p, 4s, 3d and 4p electrons of ruthenium's configuration sublevels. The remaining electrons fill the need to be written out. Thus, the remaining orbitals teton Using the maximum number of electrons that can fill each orbital, write out the electron configuration. 3. Evaluate the Answer electrons in a ruthenium atom have been accounted for. The has been used in the All correct preceding noble gas is notation, and the order of orbital filling for the correct. Caienco Notobook Flectrons in Atoms

Answer 1

2) i) Ruthenium Atomic number=th li) no of electrons in Ruthenium atom= hh electrons ill) Ruthenium condensed electronic configuration by using - preceding inertgas krypton = [kr] hed "ss' iv) Electronic configuration of Ruthenium Rue rs²25²2p% 35² 3p648%3d% 4p6 u) Remaining 8 electrons, the remaining selectrone hd and is orbitals, 55'407 vi) Ru= 15 ²25 226 25 3p62e5% 3 do 4pf5s4d" 3) 4h electrons in Ru. The correct preceding noble gas is krypton. It is used correctly and the remaining arbitals filling is correct. for getting extra stability one of the 5s orbital electron moves into ud orbital and gets extra stability by half filled orbitals in ad subshell. Rua Skr] ad loss'