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2. IRS tax forms - Wikipedia

   en.wikipedia.org/wiki/IRS_tax_forms

   As of the 2018 tax year, Form 1040, U.S. Individual Income Tax Return, is the only form used for personal (individual) federal income tax returns filed with the IRS. In prior years, it had been one of three forms (1040 [the "Long Form"], 1040A [the "Short Form"] and 1040EZ - see below for explanations of each) used for such returns.

3. Oxyanion - Wikipedia

   en.wikipedia.org/wiki/Oxyanion

   The charge on the ion is +5 − 3 × 2 = −1, and so the formula is ClO − 3. The structure of the ion is predicted by VSEPR theory to be pyramidal, with three bonding electron pairs and one lone pair. In a similar way, The oxyanion of chlorine(III) has the formula ClO − 2, and is bent with two lone pairs and two bonding pairs.

4. What Is Tax Form 941, and Who Needs to File It? - AOL

   www.aol.com/finance/tax-form-941-needs-file...

   What is IRS Form 941? IRS Form 941 is the form your business uses to report income taxes and payroll taxes withheld from your employee's wages. It also provides space to calculate and report ...

5. Oxide - Wikipedia

   en.wikipedia.org/wiki/Oxide

   An oxide (/ ˈ ɒ k s aɪ d /) is a chemical compound containing at least one oxygen atom and one other element [1] in its chemical formula. "Oxide" itself is the dianion (anion bearing a net charge of –2) of oxygen, an O 2– ion with oxygen in the oxidation state of −2. Most of the Earth's crust consists of oxides. Even materials ...

6. IUPAC nomenclature of inorganic chemistry - Wikipedia

   en.wikipedia.org/wiki/IUPAC_nomenclature_of...

   In these cases the oxidation number (the same as the charge) of the metal ion is represented by a Roman numeral in parentheses immediately following the metal ion name. For example, in uranium(VI) fluoride the oxidation number of uranium is 6. Another example is the iron oxides. FeO is iron(II) oxide and Fe 2 O 3 is iron(III) oxide.

7. Lithium selenide - Wikipedia

   en.wikipedia.org/wiki/Lithium_selenide

   Lithium selenide is an inorganic compound that formed by selenium and lithium.It is a selenide with a chemical formula Li 2 Se. Lithium selenide has the same crystal form as other selenides, which is cubic, belonging to the anti-fluorite structure, the space group is ¯, each unit cell has 4 units.