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The hydroxyl radical, Lewis structure shown, contains one unpaired electron. Lewis dot structure of a Hydroxide ion compared to a hydroxyl radical. In chemistry, a radical, also known as a free radical, is an atom, molecule, or ion that has at least one unpaired valence electron.
Radical expression involving roots, also known as an nth root; Radical symbol (√), used to indicate the square root and other roots; Radical of an algebraic group, a concept in algebraic group theory; Radical of an ideal, an important concept in abstract algebra; Radical of a ring, an ideal of "bad" elements of a ring
Unschooling is a practice of self-driven informal learning characterized by a lesson-free and curriculum-free implementation of homeschooling. [1] Unschooling encourages exploration of activities initiated by the children themselves, under the belief that the more personal learning is, the more meaningful, well-understood, and therefore useful it is to the child.
Also acid ionization constant or acidity constant. A quantitative measure of the strength of an acid in solution expressed as an equilibrium constant for a chemical dissociation reaction in the context of acid-base reactions. It is often given as its base-10 cologarithm, p K a. acid–base extraction A chemical reaction in which chemical species are separated from other acids and bases. acid ...
A radical ideal (or semiprime ideal) is an ideal that is equal to its radical. The radical of a primary ideal is a prime ideal . This concept is generalized to non-commutative rings in the semiprime ring article.
“Kids use Alpha and Sigma interchangeably,” Lindsay tells TODAY.com. “They don’t make much of a distinction between being humble or not, even though that’s (technically) the definition.”
The radical symbol refers to the principal value of the square root function called the principal square root, which is the positive one. The two square roots of a negative number are both imaginary numbers , and the square root symbol refers to the principal square root, the one with a positive imaginary part.
Destructive, combative Mars is ending an 11-week retrograde February 23. ELLE's resident astrologers, the AstroTwins, explain what comes next.