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Chemistry 102 Camp

Chemistry 102 covers principles governing atomic structure, bonding, states of matter, stoichiometry, and chemical equilibrium.

10 topics

215 lectures

Educators

UO

Camp Curriculum

18 videos
16 videos
16 videos
27 videos

Lectures

05:00
Nuclear Chemistry

Valley Of Stability - Overview

In chemistry, the valley of stability, also called the energy valley, is the concept that the reactivity of an atom or molecule increases as the distance between the nucleus and the valence electrons increases. The energy of the electrons increases as the atomic number increases. Electrons in the outermost shell (valence electrons) are called valence electrons. The energy level of the valence electrons is determined by the nuclear charge, which in turn depends on the atomic number. The energy levels of the valence electrons are closer to the nucleus than the second shell of electrons. Therefore, the second shell is the most loosely bound. The electrons in the second shell are called core electrons. The core electrons are responsible for the stability of an atom or molecule. The outermost electrons are the most reactive. The reactivity of an atom or molecule depends on the stability of the outermost electrons. The more stable the outermost electrons are, the less reactive the atom or molecule. The valley of stability is a plot of the energy level of the valence electrons versus the atomic number. The valley of stability is a graph of the most reactive elements. The elements in the middle of the valley of stability are the most stable elements. The elements at the bottom of the valley are the most reactive elements. The elements at the top of the valley are the least reactive elements. The elements at the top of the valley are the least stable elements.
Umut Ozuguzel
UO
04:31
Nuclear Chemistry

Valley Of Stability - Example 1

In chemistry, the valley of stability, also called the energy valley, is the concept that the reactivity of an atom or molecule increases as the distance between the nucleus and the valence electrons increases. The energy of the electrons increases as the atomic number increases. Electrons in the outermost shell (valence electrons) are called valence electrons. The energy level of the valence electrons is determined by the nuclear charge, which in turn depends on the atomic number. The energy levels of the valence electrons are closer to the nucleus than the second shell of electrons. Therefore, the second shell is the most loosely bound. The electrons in the second shell are called core electrons. The core electrons are responsible for the stability of an atom or molecule. The outermost electrons are the most reactive. The reactivity of an atom or molecule depends on the stability of the outermost electrons. The more stable the outermost electrons are, the less reactive the atom or molecule. The valley of stability is a plot of the energy level of the valence electrons versus the atomic number. The valley of stability is a graph of the most reactive elements. The elements in the middle of the valley of stability are the most stable elements. The elements at the bottom of the valley are the most reactive elements. The elements at the top of the valley are the least reactive elements. The elements at the top of the valley are the least stable elements.
Lily An