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प्रश्न
How many atoms of each kind are present in the following molecule:
Calcium oxide
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उत्तर
Calcium oxide (CaO) has one atom of calcium and one atom of oxygen. The calcium atom valence shell has two electrons. As a result, it contributes two electrons to complete the octet, while oxygen requires two electrons to complete the outermost shell.
संबंधित प्रश्न
The following table shows the electronic configuration of the elements W, X, Y, Z:
|
Element |
W |
X |
Y |
Z |
|
Electronic |
2, 8, 1 |
2, 8, 7 |
2, 5 |
1 |
Answer the following question based on the table above:
What is the formula of the compound formed between W and X.
Elements X, Y, and Z have atomic numbers 6, 9 and 12 respectively. Which one forms a cation?
Name an element which does not contain neutron.
Define the term:
orbit
Name the following:
The shell closest to the nucleus of an atom
An element M burns in oxygen to form an ionic compound MO. Write the formula of the compounds formed if this element is made to continue with chlorine and sulfur separately.
Identify the following reaction as either oxidation or reduction:
O + 2e- → O2-
Draw the electron distribution diagram for the formation of Carbon di oxide (CO2 ) molecule.
The element that would form cation due to the loss of electrons during the chemical reaction is ______.
The valency of noble gases is ______.
