The formula of chromium fluoride is CFr2.
Explanation: For the formation of a neutral ionic compound, the charges of the cation and the anion must be balanced. Cations are formed by the loss of electrons by metals and anions are formed by the gain of electrons by nonmetals. Here, manganese has an oxidation state of +4 called cation and selenium will form an anion with an oxidation state of -2. So they combine and their oxidation states are swapped and written in simpler integer ratios to give the neutral.
Oppositely charged cations and anions attract each other by strong columbic forces and form an ionic bond.
The chemical formula of the given compound is Explanation: The combination of chromium and sulfate ions leads to the formation of an ionic compound with the chemical name of chromium(III) sulfate. Electrons are transferred from the chromium atom to the sulfate ion. Chromium is the 24th element in the periodic table. It is a metal and it loses its electrons. The electron configuration of this element is This element will lose 3 electrons and form ions. The sulfate ion is a polyatomic ion with the chemical formula. By the cross method, the oxidation state of the ions are exchanged and they form the indices of the other ions. This results in the formation of a neutral compound. Therefore, the chemical formula of chromium(III) sulfate is
Explanation: Hello, In this case, as the Lewis theory is based on the formation of bonds between atoms through valence electrons, we can check the chemical formula of the compound formed by strontium and nitrogen by noting that strontium has two valence electrons because it is in group IIA, therefore two nitrogens must be available for bonding. Therefore, since nitrogen is in the VA group, it is said that three electrons are needed to reach the octet (maximum number of bonded electrons), so three strontiums must be available for bonding. Thus, the formula should be: Sincerely.
Explanation: Hello, In this case, vanadium is specified with +3 as the oxidation state, however, it is stated that vanadium is combined with the bromate ion, which according to IUPAC rules represents the last oxidation state of bromine, i.e. +5, the bromate ion is thus accumulated forming the bromic acid indicated below: This bromate comes from the bromic acid anion, so this is the formula necessary vanadium bromate (III) which gives: Sincerely.
Answer 6
Since manganese has a 4+ charge and selenium has a 2- charge, you need two selenium atoms in the formula to have their charges cancel each other out. The chemical formula of manganese(IV) selenide is: MnSe₂
Answer 7
Explanation: Hello, First, Chromium (iii) is represented: Thus, for iodate, the suffix “ate” represents the oxidation state +5, like this: So the compound formed is: e is called chromium (III) iodate. Cordially.
Its chemical formula is Ca3N2
NA2S Explanation: the compound formed was sodium sulphide, therefore the chemical formula is NA2S
SrO = strontium oxide Explanation: Strontium is a group 2 element. This means that it has 2 electrons in the outer shell. This gives strontium a positive electronic charge of +2. Oxygen is a group 16 element. This means that it has 6 electrons in the outer shell. To obtain the stable noble gas configuration, 2 extra electrons are needed. This gives oxygen a negative electronic charge of -2. This means that 1 strontium atom can bond with 1 oxygen atom. To form strontium oxide (SrO).
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