Formula is Ca(OH)2, I cant quite work it out because i cant get it to work ionically and it just doesnt quite look right covalently
OH or hydroxide is a radical which form negative ions. OH obtain one electron to be stable
Ca or calcium is an atom which form positive ions. Ca give out 2 electrons to be stable
2 OH radicals obtain the 2 electrons released by Ca
Then Ca become positive and Oh become negative…. these 2 attract due to opposite charges in them, thus forming Ca(OH)2 which is an ionic bond
( ionic bond is formed by obtaining and giving out electrons and forming ions or charged atoms)
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A pretty good rule is, compounds containing metals and non-metals will be ionic. This is because of the complementary of the electronegativity of non-metals and electropositivity of the metal. You might have learned in class or from your book that the way elements are arranged in the periodic table make certain trends very obvious. For instance, elements on the left side are metals, elements on the right are non-metals, and there’s a diagonal strip dividing them, where the semi-metallic elements are. Elements on the right, especially towards the top are highly electronegative (electron-grabbing), while elements on the right, especially towards the bottom, are highly electropositive (doesn’t take much energy to eject a valence electron). The result is, an electropositive metal easily gives up its electron to an electronegative non-metal, and the two will happily exist as ions (permanently charged bits). The metal doesn’t “want” the electron back, and the non-metal doesn’t “want” to give it back anyway. In your case of Ca(OH)[sub]2[/sub], Ca is a metal, while O and H are non-metals.
You know that this is a base – it is a Gr11 alkali metal hydroxide: Therefore:
It dissociates in water:
Ca(OH)2 → Ca 2+ + 2OH-
It must be ionic.
Unless you have a small cation and large anion like for example LiI (lithium iodide) than its definitely ionic like in this case i.e. Ca(OH)2
Calcium hydroxide is ionic bond.
as its boiling and melting point are respectively 3123 & 2845 ‘C.
which is similar to properties of ionic bonds. i.e. having high melting and boiling point.
Anytime a metal and a non-metal bond, it’s gonna be ionic.
It’s a strong electrolyte, it is sometimes called a coordinate covalent through.