Write any two information that are obtained from valance electron.
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The presence of valence electrons can determine the element's chemical properties, such as its valence—whether it may bond with other elements and, if so, how readily and with how many. ... An energy gain can trigger the electron to move (jump) to an outer shell; this is known as atomic excitation.
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The electrons present in the outermost shell of an atom are known as valence electrons (or valency electrons) because they decide the valency (combining capacity) of the atom. For Example: - The atomic number of sodium is 11, which means sodium atom has 11 electrons in it.
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