One bond and 6 unpaired electrons around fluroine.
There is no metal like you describe in your question. Hydrogen is in Group 1, but is not an alkali metal. It is a gas at standard temperature. It does rarely behave like an alkali metal, and it does have only one electron. Hydrogen is in Group 1 primarily because of its electron configuration, which is 1s1. All of the alkali metals also have one electron in their outermost s orbital.
There are a few ways of drawing this diagram.The simplest shows an H and the Fl side-by-side with the Fl encircled with eight dots, two above it, two on either side and two below. (None around the H.)Another way shows the H and the Fl side-by-side with the Fl encircled with six dots, two above it, two on the right and two below, with a horizontal line connecting the H and the Fl.Yet another way shows the H and the Fl side-by-side with the Fl encircled with seven dots, two above it, two on the right, two below and one on the left with another unfilled circle on the left.All are intended to convey that HFl is a covalent molecule in which the H and the Fl share an electron. If you would like to see these representations then you could visit images.google.com and enter the query electron dot diagram of hydrogen fluoride.
Oh, isn't that just a happy little question! Strontium fluoride has the noble gas electron configuration of krypton, which is [Kr]. This means it has a stable electron configuration similar to a noble gas, making it less likely to react with other elements. Just like painting a serene landscape, understanding electron configurations can bring a sense of peace and harmony to your chemistry studies.
Yes, hydrogen bonds do exist between molecules of hydrogen fluoride. This is because hydrogen fluoride molecules are quite small and are very polar due to the high electronegativity difference of hydrogen and fluorine. As a result, the hydrogen end of each molecule is slightly positive while the fluoride end is slightly negative. The slightly positive hydrogen end of one molecule will be attracted to the slightly negative fluoride end of another molecule, thus forming a hydrogen bond.
Glass etching pastes or cremes contain fluoride. The most common are sodium fluoride and hydrogen fluoride. This does not 'etch' the glass, it causes fluoridation which looks like etching.
Fluoride is typically extracted from minerals like fluorite or apatite. These minerals are crushed, and then treated with sulfuric acid to produce hydrogen fluoride. The hydrogen fluoride is then further processed to yield various fluoride compounds.
Hydrogen.
Each hydrogen atom has one electron on its outer shell. The first electronic shell of any element can only hold 2 electrons, this means that each hydrogen atom needs one electron. 2 hydrogen atoms 'share' their electrons with each other, this can be shown on a dot and cross diagram. Each hydrogen now has 2 electrons on their outer shell and they have become stable. ;)
hydrogen fluoride Alcohols like methanol, ethanol. Solvents like dimethyl formamide (DMF) or dimethyl sulfoxide (DMSO)
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Hydrogen and helium have different valence electron configurations. Hydrogen has one valence electron, and helium has two valence electrons. However, hydrogen does typically form covalent bonds in which it shares an electron, and thereby gains an effective electron configuration of two, like helium. Hydrogen also can form the H+ ion which has no electrons.
Molecules with hydrogen bonded to electronegative atoms like nitrogen, oxygen, or fluorine can engage in hydrogen bonding. Examples include water (H2O), ammonia (NH3), and hydrogen fluoride (HF).