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When a trigonal boron atom accepts a pair of electrons from a Lewis base, it adopts a tetrahedral configuration ( sp < sup > 3 </ sup >), and the octet rule is satisfied.
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When and trigonal
When molten antimony is slowly cooled, metallic antimony crystallizes in a trigonal cell, isomorphic with that of the gray allotrope of arsenic.
When and boron
When extended indefinitely, a layer of hexagonal boron nitride, BN, is obtained, with a structure identical to that of graphene apart from the alternation between boron and nitrogen in each ring.
When boron forms three covalent bonds, as in the borate ion, BO < sub > 3 </ sub >< sup > 3 -</ sup >, it has a share in three pairs of electrons.
When neodymium – iron – boron permanent magnets are used, levitation is achieved at low speeds.
When hit by a weak neutron beam, boron will locally emit radiation that will destroy the tumor.
When a positive charge develops in the alkene on the most substituted carbon atom, that is where the partially negatively charged hydrogen atom adds, leaving the least substituted carbon atom for the boron atom.
When and atom
When a molten metal is mixed with another substance, there are two mechanisms that can cause an alloy to form, called atom exchange and the interstitial mechanism.
When the atoms are relatively similar in size, the atom exchange method usually happens, where some of the atoms composing the metallic crystals are substituted with atoms of the other constituent.
When more electrons are added to a single atom, the additional electrons tend to more evenly fill in a volume of space around the nucleus so that the resulting collection ( sometimes termed the atom ’ s “ electron cloud ” ) tends toward a generally spherical zone of probability describing where the atom ’ s electrons will be found.
When two monosaccharides undergo dehydration synthesis, water is produced, as two hydrogen atoms and one oxygen atom are lost from the two monosaccharides ' hydroxyl group.
When the traversal encounters an atom through which the current path has already passed, a ghost atom is generated in order to keep the tree finite.
When an electron in an excited molecule or atom descends to a lower energy level, it emits a photon of light equal to the energy difference.
When oxygen binds to the iron complex, it causes the iron atom to move back toward the center of the plane of the porphyrin ring ( see moving diagram ).
When ionized hydrogen is written as " H < sup >+</ sup >" as in the solvation of classical acids such as hydrochloric acid, the hydronium ion, H < sub > 3 </ sub > O < sup >+</ sup >, is meant, not a literal ionized single hydrogen atom.
When a silver-109 atom, which comprises approximately half of all silver in existence, catches a neutron, it undergoes a beta decay to become cadmium-110.
When implanted in a semiconductor, each dopant atom can create a charge carrier in the semiconductor after annealing.
When the energy difference between the atomic orbitals of two atoms is quite large, one atom's orbitals contribute almost entirely to the bonding orbitals, and the others atom ’ s orbitals contribute almost entirely to the antibonding orbitals.
* When an < sup > 235 </ sup > U atom captures a neutron, it is converted to an excited state of < sup > 236 </ sup > U. About 81 % of the excited < sup > 236 </ sup > U nuclei undergo fission, but the remainder decay to the ground state of < sup > 236 </ sup > U by emitting gamma radiation.
When an atom undergoes nuclear fission, a few neutrons ( the exact number depends on several factors ) are ejected from the reaction.
When a heavy atom undergoes nuclear fission it breaks into two or more fission fragments.
When an X-ray photon collides with an atom, the atom may absorb the energy of the photon and boost an electron to a higher orbital level or if the photon is very energetic, it may knock an electron from the atom altogether, causing the atom to ionize.
When such cascades recoil and reach the target surface with an energy above the surface binding energy, an atom can be ejected.
When an atom is probed by an external mechanism, such as a photon or a beam of electrons with energies in the range of 2 keV to 50 keV, a core state electron can be removed leaving behind a hole.
When an antihydrogen atom comes into contact with ordinary matter, its constituents quickly annihilate.
When and accepts
# When the individual perceives and accepts into one consistent and integrated system all his sensory and visceral experiences, then he is necessarily more understanding of others and is more accepting of others as separate individuals.
When Armitage offers to cure him in exchange for Case's hacking abilities he warily accepts the offer.
When Q accepts two electrons and two protons, it becomes reduced to the ubiquinol form ( QH < sub > 2 </ sub >); when QH < sub > 2 </ sub > releases two electrons and two protons, it becomes oxidized back to the ubiquinone ( Q ) form.
When Holmes begs for an alternative, the commander's aide suggests that Holmes resign his commission " for the good of the service " and leave the Army, which the general accepts with dispatch.
" When Edna gently explains " It's like I'm DC Comics, and you're Marvel ", he accepts the comparison without any rancor.
When Alvy accepts an offer to present an award on television, they fly out to Los Angeles, but on the return they agree that it ’ s not working.
When Alec rides up and offers to " rescue " her from the situation, she accepts.
" When a person accepts himself as loved by God, he is liberated from conceptions of " the blood line, the nation, the church, money, ego, entitlement, sexual muscle, security, violence, and the paltry gods of modern life.
When Sinestro returns with the " yellow element ", Ranakar became infuriated of his betrayal ( more so when he called him a " stupid little troll "), and accepts Hal Jordan upon defeating Sinestro.
When Achilles demands that " If you accept A and B and C, you must accept Z ," the Tortoise remarks that that's another hypothetical proposition, and suggests even if it accepts C, it could still fail to conclude Z if it did not see the truth of:
When she accepts, Katie reluctantly has to quit her job, much to Glenn's annoyance.
When Jerry is offered a job in Beirut, he impulsively proposes to LouLou, who accepts.
When Edmund accepts his mother's excuse that she had been upstairs so long because she had been " lying down ", Jamie looks at them both contemptuously.
When everybody does try it, they all agree ( especially because the Tweek brand is awful ), including Mr. Tweek, who accepts an offer to run the Harbucks shop.
When roles for the class version of Hamlet are handed out, he's not thrilled about being cast as Queen Gertrude but accepts it after its revealed that all parts were played by men in Shakespeare's time.
When the center accepts a case one of the first actions taken is to post a flyer with information about the missing child.
When Flory delivers it to Elizabeth she accepts it regardless of the fact that it reeks and he talks over their previous relationship telling her he still loves her.
When she enters his crystal palace she accepts Abrahamic monotheism and the worship of one God alone, Allah.
When Queen Ann learns of the riches to be found in the Nome King's underground kingdom, she calms down and accepts the services of Tik-Tok as her new private.
When Max returns he sees his best friend with his former girlfriend, but he accepts this change.
When one critic writes, " The outstanding feature of Mr. X's work is its living quality ," while another writes, " The immediately striking thing about Mr. X's work is its peculiar deadness ," the reader accepts this as a simple difference of opinion.
When the doping material is added, it takes away ( accepts ) weakly bound outer electrons from the semiconductor atoms.
When her husband suddenly dies in a suspicious traffic accident, Ashley accepts the President's offer in order to fill the void in her life.
When she chances upon the aristocrat in question and accepts an invitation to share a bottle of the wine, she becomes hopelessly drunk.
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