0
If a metal X with valency 3 combines with a non-metal Y with a valency 2, what will be the formula of the compound formed when X and Y combines?
Jason Bassey-Duke
1
Veda Glover
Add your answer:
Earn +20 pts
What do the roman numeral in a chemical formula mean?
They refer to the valency of the metal in the compound, such as Iron II or Iron III chloride.
Radical - positive and negative radical in chemistry?
Valency is the number of hydrogen atoms that can combine with [or displace] one atom of the element [or radical] to form a compound. For example, one atom of hydrogen combines with one atom of chlorine to form hydrogen chloride [HCl]; so, the valency of chlorine [chloride] is one. Similarly, the valency of the nitrate radical [NO3] in the compound nitric acid [HNO3] is 1, and the valency of the sulfate radical in the compound sulfuric acid [H2SO4] is 2. For elements that do not combine with hydrogen, the valency is the combining power of the element with another element whose valency is known. Valency may also be defined as the number of electrons that an atom donates or accepts to form the duplet state (i.e., 2 electrons in outermost shell) or octet state (i.e., 8 electrons in outermost shell). The valency of an element [or radical] is always a whole number. Elements [or radicals] with valency one are monovalent, those with valency two are divalent, and those with valency three are trivalent
Why is Roman numerals used in the names of compounds that contain transition metals?
Numbers are used to indicate the valency of the metal in the compound. By convention Roman numerals are used so that the number isn't mistakenly confused with the numbers present in the formula.
What do the Roman numerals in chemistry equations mean?
They refer to the valency of the transition element which is included in the formula.
When do you use roman numerals in an element?
we usually use roman numerals in writing names of compounds of transitional elements which have more than one valency . for example we have two compounds of iron chloride , iron(II)chloride and iron(III)chloride depending on the valency of iron in each compound.
What is the formula h3p?
I'm betting on hydrogen phosphide (hydrogen which has a valency 1 combines with phosphide which has a valency 3)
Is copper disulphide a mixture or a compound?
Copper disulphide is a compound Assuming the coppers has valency 2 it will have the formula Cu(SO3)2
Does hydroxide have valency?
Yes, hydroxide has a valency of 1. So sodium hydroxide - NaOH - is a compound with Na having a valency of 1 and hydroxide having a valency of 1. For calcium hydroxide, in which calcium (Ca) has a valency of two (2), the formula is Ca(OH)2.
What is the formula and valency of aluminate?
I think the formula of aluminate is AlO2 and valency is 1
What do the roman numeral in a chemical formula mean?
They refer to the valency of the metal in the compound, such as Iron II or Iron III chloride.
How can you tell the difference between ionic and covalent bond only by looking at the chemical formula?
A compound formed by ionic bond will have charges written on the Chemical formula of the compound since ionic compounds carry charges. But, covalent compounds won't have charges associated with them because they are not formed by the transfer of electrons. Another way of telling the difference is by looking at the valencies. One of the elements present in a covalent compound will have tetra-valency i.e., a valency of 4.
How do you find the chemical formula of sodium oxide?
Well you should know the formula and valency of each element first, Sodium formula - Na valency - +1 Oxide formula - Oxygen - O valency - (-2) Since the charge of the compound has to be 0 (zero) 2 atoms of sodium (+2) are required to neutralize the effect of the one oxygen atom (-2) ----------- [2 + (-2) = 0] Na2O
What is valency of dichromate?
Its valency is -2 Its chemical formula is Cr2O7
How do you find out valency of mixture or compound?
By the formula 2n2 , we can find no of electrons in shells like, if atomic no. of X is 17 so the electronic configuration is 2,8,7. so the valency is 1 in order to complete its octave.
What is the formula for valency?
The number of electrons needed to lose or gain is its Valency
What is the valency of trioxosulphate IV?
it is the stupidest compound whos valency is really difficult to find
What is the formula for potassium sulphate?
Valency of k=1+ valency so4=2- after crisscrossing the valencies, we get- chemical formula- k2so4
