⚡✔️Explain the position of Elements in the ‘Modern Periodic Table’.
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Periodic Table Position and Electron Configuration
Learning Objective
Use the periodic table to identify atom properties such as groups and electron configurations.
Key Points
Elements are organized by period and group, with the period corresponding to the principle energy level, and the group relating to the extent the subshells are filled.
The properties of an atom relate directly to the number of electrons in various orbitals, and the periodic table is much like a road map among those orbitals such that chemical properties can be deduced by the position of an element on the table.
The electrons in the outermost or valence shell are especially important because they can engage in the sharing and exchange that is responsible for chemical reactions.
Terms
quantum numberOne of certain integers or half-integers that specify the state of a quantum mechanical system (such as an electron in an atom).
electron shellThe collective states of all electrons in an atom having the same principal quantum number (visualized as an orbit in which the electrons move).
orbitalA specification of the energy and probability density of an electron at any point in an atom or molecule.
hope it's help u
Learning Objective
Use the periodic table to identify atom properties such as groups and electron configurations.
Key Points
Elements are organized by period and group, with the period corresponding to the principle energy level, and the group relating to the extent the subshells are filled.
The properties of an atom relate directly to the number of electrons in various orbitals, and the periodic table is much like a road map among those orbitals such that chemical properties can be deduced by the position of an element on the table.
The electrons in the outermost or valence shell are especially important because they can engage in the sharing and exchange that is responsible for chemical reactions.
Terms
quantum numberOne of certain integers or half-integers that specify the state of a quantum mechanical system (such as an electron in an atom).
electron shellThe collective states of all electrons in an atom having the same principal quantum number (visualized as an orbit in which the electrons move).
orbitalA specification of the energy and probability density of an electron at any point in an atom or molecule.
hope it's help u
Answered by
6
There are 118 elements in total.There are 18 groups in the periodic table.
Elements are presented in increasing atomic number. All the elements are on the basis of their atomic numbers, electron configurations, and chemical properties. In general, within one row the metals are on the left, and non-metals on the right.
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