neils bohr published his model of the atomic structure in 1913. he introduced the theory of electrons…

neils bohr published his model of the atomic structure in 1913. he introduced the theory of electrons traveling in orbits around the atoms nucleus, with electrons orbiting only in certain orbits called shells. each shell can contain a fixed number of electrons.\naccording to this model of the atom, the chemical properties of an element are mainly determined by\na the number of electrons in the outer shells.\nb the number of electrons in the inner shells.\nc the total number of electrons in all shells.\nd the difference between number of electrons and protons.

neils bohr published his model of the atomic structure in 1913. he introduced the theory of electrons traveling in orbits around the atoms nucleus, with electrons orbiting only in certain orbits called shells. each shell can contain a fixed number of electrons.\naccording to this model of the atom, the chemical properties of an element are mainly determined by\na the number of electrons in the outer shells.\nb the number of electrons in the inner shells.\nc the total number of electrons in all shells.\nd the difference between number of electrons and protons.

Answer

Brief Explanations:

The chemical properties of an element are mainly determined by the number of electrons in the outer - most shells (valence electrons) as they are involved in chemical bonding and reactions. Inner - shell electrons are more stable and less likely to participate in chemical changes. The total number of electrons in all shells is not the main determinant of chemical properties. The difference between the number of electrons and protons determines the charge of the ion but not the chemical properties of the neutral element.

Answer:

A. the number of electrons in the outer shells.