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प्रश्न
Separate the following compounds into three categories - ionic, polar and covalent compounds; N2, NH4Cl, NH3, NO, NH4NO3, NCl3.
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उत्तर
Ionic compounds = NO, NH4Cl, NH4NO3
Covalent compounds = N2, NH3, NO
Polar compounds = NCl3
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संबंधित प्रश्न
(i) How many atoms of each kind are present in the following molecules: calcium oxide, chlorine, water, carbon tetrachloride?
(ii) How many electrons are required for their octet structure?
In term of electron transfer, define
Reduction
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 questions based on the table above:
What is the formula of the compound formed between X and Z.
An element with the atomic number 19 will most likely combine chemically with the element whose atomic number is
State the type of bonding in the following molecule.
Calcium oxide
Elements X, Y, and Z have atomic numbers 6, 9 and 12 respectively. Which one forms a cation?
Identify the following reaction as either oxidation or reduction:
K - e- → K+
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.
Explain Octet rule with an example.
Elements A, B and C have atomic number 17, 19 and 10 respectively.
State which one is chemically inert.
