explain electronic configuration in 4th block
Answers
The electron configuration of an element describes how electrons are distributed in its atomic orbitals. Electron configurations of atoms follow a standard notation in which all electron-containing atomic subshells (with the number of electrons they hold written in superscript) are placed in a sequence.
electron Configurations are useful for:
Determining the valency of an element.
Predicting the properties of a group of elements (elements with similar electron configurations tend to exhibit similar properties).
Interpreting atomic spectra.
This notation for the distribution of electrons in the atomic orbitals of atoms came into practice shortly after the Bohr model of the atom was presented by Ernest Rutherford and Niels Bohr in the year 1913
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Answer:
The symbols used for writing the electron configuration start with the shell number (n) followed by the type of orbital and finally the superscript indicates how many electrons are in the orbital. For example: Looking at the periodic table, you can see that Oxygen has 8 electrons.