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2006-11-01 15:40:20 · 4 answers · asked by keepahappyface 1 in Science & Mathematics Chemistry

4 answers

boron has five protons and electrons

2006-11-01 15:47:01 · answer #1 · answered by lollipop 3 · 0 0

The electron configuration of boron is 1s22s22p. It has only three electrons to work with, so the ion is unpolarizable, and does not hydrate. For this reason, boron is not eager to donate electrons in an electrovalent bond, and can also not accept them easily. Therefore, most of its bonds are covalent, and even forms half-bonds in which only one electron is shared covalently, not the usual two. This gives boron an apparent valence of +6 that we shall see in some interesting compounds. The first ionization potential is 8.30 V, which is not unusually high.

The other commonly-used boron compounds are orthoboric acid, or simply boric or boracic acid, H3BO3, and boron trioxide, B2O3, its anhydride. Note that the formula for boric acid can be written B(OH)3, as boron hydroxide. If boron were a normal metal, the hydroxyl ions would separate in water, creating the trivalent boron ion B+++. This, however, does not happen to the smallest degree, and boron does not form ionic bonds. Moreover, boric acid is not gelatinous like aluminium hydroxide, but crystallizes nicely. Boron trifluoride, BF3 is not an ionic compound like NaF, which has no ions in its crystals. Instead, the hydrogens are lost long before the oxygens. In aqueous solution, boric acid is a very weak acid, weaker even than carbonic. Its first ionization product is 6.4 x 10-10. Boric acid solution (solubility 6.35% at room temperature, 27.6% at 100°C) is used as an antiseptic, especially as an eyewash. Boric acid can be produced from borax by treatment with H2SO4, and boron trioxide by heating boric acid. These are the initial processes in the synthesis of all boron compounds

2006-11-01 15:52:30 · answer #2 · answered by Anonymous · 0 0

Boron has an atomic number of 5 which means it has 5 protons and 5 electrons.

2006-11-01 15:43:20 · answer #3 · answered by smarties 6 · 0 0

well wikipedia will give u everything u need to know about the periodic table

2006-11-01 15:43:01 · answer #4 · answered by fo_otballfan 2 · 0 0

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