- These configurations occur in the noble gases. The noble gases are very stable elements that do not react easily with any other elements. Electron configurations can help to make predictions about the ways in which certain elements will react and the chemical compounds or molecules that different...
- Nov 08, 2010 · Okay so from what I understand the electron config for Fe is. 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d^6. Now to get the configuration for Fe 2+ would I remove 2 electrons from 4s 2 or remove one from 4s 2 and one from 3d 6?
- (ii) Noble gases have positive value of electron gain enthalpy. Answer:-(i) The effective nuclear charge of magnesium is higher than that of sodium. For these reasons, the energy required to remove an electron from magnesium is more than the energy required in sodium. Hence, the first ionization enthalpy of sodium is lower than that of magnesium.
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