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प्रश्न
Name the following:
Metal with valency 2
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उत्तर
Magnesium
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संबंधित प्रश्न
State the type of bonding in the following molecule.
Calcium oxide
How many electrons are required or released by each atom in calcium oxide to attain the nearest noble gas configuration?
State the following is a reduction reaction or oxidation reaction.
\[\ce{Fe^2+ - e- -> Fe^3+}\]
How does the Modern atomic theory contradict and correlate with Dalton's atomic theory?
Write the formula of its (X)
sulphate
nitrate
phosphate
carbonate
hydroxide.
Give the orbital diagram of the following:
Magnesium chloride
Five atoms are labelled V to Z
| Atoms | Mass Number | Atomic Number |
| V | 40 | 20 |
| W | 19 | 9 |
| X | 7 | 3 |
| Y | 16 | 8 |
| Z | 14 | 7 |
- Which one of these atoms
(1) contains 7 protons;
(2) has an electronic configuration 2, 7? - Write down the formula of the compound formed by atoms X and Y.
Write the basic concept of Kossel – Lewis theory.
How many atoms of each kind are present in the following molecule:
carbon tetrachloride
Elements A, B and C have atomic number 17, 19 and 10 respectively.
State which one is a metal.
