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Compound pulley simulator
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Learn the basics of electron configurations before attempting to write out the configuration for any specific element. Electron configurations have three main parts: a number that tells you the energy level, a letter that tells you the specific orbital, and a superscript number that tells you the number of electrons in that specific orbital. Oct 22, 2011 · I keep getting these wrong :( Predict the ground-state electron configuration of the following ions. Write your answers in abbreviated form, that is, beginning with a noble gas in brackets. (a) Cr^(2+) (b)Cu^(2+) (c)Co^(3+) The atomic number of zinc is 30, which means that all zinc atoms have 30 protons in their nuclei. A neutral atom has equal numbers of protons and electrons, so a neutral atom of zinc would have 30 electrons. The electron configuration of a neutral zinc atom is #"1s"^2"2s"^2"2p"^6"3s"^2"3p"^6"3d"^10"4s"^2"#.. The #"Zn"^(2+)# ion has lost two electrons, which leaves it with 30 protons and 28 ...