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  2. Octet rule - Wikipedia

    en.wikipedia.org/wiki/Octet_rule

    The bonding in carbon dioxide (CO 2): all atoms are surrounded by 8 electrons, fulfilling the octet rule.. The octet rule is a chemical rule of thumb that reflects the theory that main-group elements tend to bond in such a way that each atom has eight electrons in its valence shell, giving it the same electronic configuration as a noble gas.

  3. Double bond rule - Wikipedia

    en.wikipedia.org/wiki/Double_bond_rule

    Although such compounds are not intrinsically unstable, they instead tend to dimerize or even polymerize. [1] Moreover, the multiple bonds of the elements with n =2 are much stronger than usual, because lone pair repulsion weakens their sigma bonding but not their pi bonding.) [ 2 ] An example is the rapid polymerization that occurs upon ...

  4. Electron counting - Wikipedia

    en.wikipedia.org/wiki/Electron_counting

    In chemistry, electron counting is a formalism for assigning a number of valence electrons to individual atoms in a molecule. It is used for classifying compounds and for explaining or predicting their electronic structure and bonding. [1]

  5. Quizlet - Wikipedia

    en.wikipedia.org/wiki/Quizlet

    Quizlet's primary products include digital flash cards, matching games, practice electronic assessments, and live quizzes. In 2017, 1 in 2 high school students used Quizlet. [4] As of December 2021, Quizlet has over 500 million user-generated flashcard sets and more than 60 million active users. [5]

  6. List of chemistry mnemonics - Wikipedia

    en.wikipedia.org/wiki/List_of_chemistry_mnemonics

    A mnemonic is a memory aid used to improve long-term memory and make the process of consolidation easier. Many chemistry aspects, rules, names of compounds, sequences of elements, their reactivity, etc., can be easily and efficiently memorized with the help of mnemonics.

  7. Today's Wordle Hint, Answer for #1275 on Sunday ... - AOL

    www.aol.com/todays-wordle-hint-answer-1275...

    SPOILERS BELOW—do not scroll any further if you don't want the answer revealed. The New York Times. Today's Wordle Answer for #1275 on Sunday, December 15, 2024.

  8. California to remove racist term for Native American Woman ...

    www.aol.com/california-remove-racist-term-native...

    Officials in California are working to remove a racist term towards Native American women in more than 30 locations in California, according to the state Natural Resources Agency.. The removal of ...

  9. Periodic trends - Wikipedia

    en.wikipedia.org/wiki/Periodic_trends

    Nuclear charge is defined as the number of protons in the nucleus of an element.Thus, from left-to-right of a period and top-to-bottom of a group, as the number of protons in the nucleus increases, the nuclear charge will also increase. [8]