if O is -2 and hydrogen +1 then phosphorus is +5
What this tells you is that the oxidation number of P in phosphorus acid must be +3 or +4, while the value for phosphoric acid must be +5 or +6. Since phosphorus is a member of group 5A, it has 5 electrons in its valence shell. As a result, the most common oxidation states it can have are +3 (s2p0) or +5 (s0p0).
So far we have determined the oxidation state at P. What needs to be done now is to add as many oxygens and hydroxyl (OH) to make the molecule neutral. The correct combination will have the correct Lewis-dot structure. For phosphorous acid we need a combination that will add up to +3. This can be done by adding 3 OH- to the central atom to yield the structure H3PO3. There is a little caveat though. Because this is not a hydro___acid, it is implied that there must be at least one oxo ligand (O^2-) bonded to P. Therefore, the actual bonding structure is not P(OH)3 but rather H-P(=O)(OH)2, where one H is bonded directly to the phosphorus atom and is the least acidic of the protons. The great thing is that the oxidation charge of P is still +3 because P is slightly more electronegative than H (some theories will say otherwise); thus the hydrogen is regarded as H+ for this example.
With phosphoric acid, charge of +5, you can have 3 OH- and 1 O^2- to make a neutral molecule:
O=P(OH)3.
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Answer:
- <em>The symbol for silver on the periodic table is </em><u><em>Ag.</em></u>
Explanation:
The elements are pure substances constituted by one single kind of atom.
Every element has a universal accepted chemical name and a <em>symbol</em> for simplicity of the chemical formulae and to enable scientific communication.
There are 118 known elements and all of them are represented in the <em>periodic table</em>.
The chemical symbol consists of one or two letters. The first letter is always upper case and the second one (if exists) is lower case.
The symbol <em>Ag</em> for silver derives from the latin name argentum.
The atomic number of silver (Ag) is 47 which permits you to find it easily in the periodic table where you can find this symbol and some important properties.
Answer:
They are both electropositive
Explanation:
Sodium and Calcium are both metals and therefore they are electropositive.
Both of them have large atomic radius and are willing to lose electrons instead of gaining or sharing of electrons.
To attain stability, both sodium and calcium must lose electrons. So there is no attraction between them to form bonds.
I am assuming if you turn a magnet fast it will fall or still stick.
A synthetically-produced narcotic medication, drug, or agent similar to the opiate morphine, but not derived from opium; used to relieve pain
Yes