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प्रश्न
Five atoms are labeled A to E
|
Atoms |
Mass No |
Atomic No. |
|
A |
40 |
20 |
|
B |
19 |
9 |
|
C |
7 |
3 |
|
D |
16 |
8 |
|
E |
14 |
7 |
(a) Which one of these atoms:
(i) contains 7 protons
(ii) has electronic configuration 2,7
(b) Write down the formula in the compound formed between C and D
(c) Predict : (i) metals (ii) non-metals
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उत्तर
(a)
Atom E contains 7 protons.
Atom B has an electronic configuration 2, 7.
(b) Atom C stands for7Li3, Atom D stands for 8O16.
Hence, compound formula is Li2O.
(c) Metals: A and C, Non-metals: B, D, E
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संबंधित प्रश्न
Five atoms are labelled from A to E.
| Atoms | Mass No. | Atomic No. |
| A | 40 | 20 |
| B | 19 | 9 |
| C | 7 | 3 |
| D | 16 | 8 |
| E | 14 | 7 |
(a) Which one of these atoms:
(i) contains 7 protons,
(ii) has an electronic configuration 2, 7?
(b) Write down the formula of the compound formed between C and D.
(c) predict which are: (i) metals, (ii) non-metals?
Separate the following compounds into three categories - ionic, polar and covalent compounds; N2, NH4Cl, NH3, NO, NH4NO3, NCl3.
Among the following compounds identify the compound that has all three bonds (ionic, covalent and coordinate bond).
How many atoms of each kind are present in the following molecules: calcium oxide, chlorine, water, carbon tetrachloride?
How many electrons are required by each atom mentioned in (a) to attain the nearest noble gas configuration?
How many atoms of each kind are present in the following molecule:
Calcium oxide
What do you understand by redox reactions? Explain oxidation and reduction in terms of loss or gain of electrons.
Why do they exist as monoatoms in molecules?
Give the orbital diagram of the following:
Magnesium chloride
State the type of bonding in the following molecules.
Calcium oxide
Explain Octet rule with an example.
