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प्रश्न
Name the following:
The compound formed when iron [Fe2+] combines with oxygen [O2−].
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उत्तर
Iron (III) oxide
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संबंधित प्रश्न
How many atoms are present in a H2S molecule?
What does 2H2S represent ?
What does 5H2S04 represent ?
Write the molecular formulae of Magenesium oxide :
Write the molecular formulae of Calcium phosphate :
The valency of sodium is one, write the molecular formula for sodium oxide ?
The valency of sodium is one, write the molecular formula for sodium sulphate ?
Fill in the following blanks :
1 mole contains .............. atoms, molecules or ions of a substance.
If one mole of nitrogen molecules weighs 28 g, calculate the mass of one molecule of nitrogen in grams.
What is the number of electrons donated by a magnesium atom and number of electrons accepted by a sulphur atom during their chemical combination?
‘Atoms of the same element or different from Dalton’s atomic theory by the Modern Atomic Theory.
Give two examples each of –
- Atoms of the same element
- Atoms of different elements combining to form a molecule.
Fill in the blank:
A molecule of an element is _________.
State the correct formula of the following from the option given:
Ammonium sulphate
Name the following:
A molecule of a compound containing two oxygen atoms and one nitrogen atom.
Define molecule.
What is the fraction of the mass of water due to neutrons?
Express each of the following in kilograms
5.84 × 10−3 mg
Express each of the following in kilograms
58.34 g
A group of atoms carrying a fixed charge on them is called ————.
