Given the following electronic configurations, identify how many valence electrons each atom has. a= b= c=

Answer : Valence electrons in atom A = 1, B = 6 and C = 2.

Explanation :

Valence electrons means the outermost electrons are the ones which involved in bonding. Electrons are arranged in energy levels or shells.

Valence electrons are found in the highest energy orbitals of an element.

        The number of valence electrons in (Na) = A = 1

Similarly,

       The number of valence electrons in (O) = B = 6

       The number of valence electrons in (Fe) = C = 2

specific gravity is the density of a substance divided by the density of water. since (at standard temperature and pressure) water has a density of 1 gram/cm3, and since all of the units cancel, specific gravity is usually very close to the same value as density

so "c" is the answer

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