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प्रश्न
In term of electron transfer, define Oxidation
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उत्तर
Oxidation is the loss of electrons during a reaction by a molecule, atom or ion. In terms of electron transfer, oxidation is defined as the phenomenon in which an atom loses an electron to form a positively charged cation.
During the formation of ionic bond one atom undergoes oxidation while another atom undergoes reduction.
संबंधित प्रश्न
How do atoms attain noble gas configuration?
In term of electron transfer, define
Reduction
What type of bond is formed between two atoms, when the electronegative difference between them is zero?
Among the following compounds identify the compound that has all three bonds (ionic, covalent and coordinate bond).
Element X is a metal with a valency 2; Y is a non-metal with a valency 3.
(a) Write an equation to show how Y forms as ion
(b) If Y is a diatomic gas, write an equation for the direct combination of X and Y to form a compound.
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.
State the following is a reduction reaction or oxidation reaction.
\[\ce{Cu -> Cu^2+}\]
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
Name the following:
Metal with valency 2
Name the following:
Two atoms having the same number of protons and electrons but different number of neutrons.
Explain
Octet rule for the formation of sodium chloride
In the formation of magnesium chloride (by direct combination between magnesium and chlorine), name the substance that is oxidized and the substance that is reduced.
Draw the geometric atomic structure of the following atom showing the number of electrons, protons and neutrons in them:
\[\ce{^39_19K}\]
How do atoms attain Noble gas electronic configuration?
| Name of compound | Type of compound | |
| a. | Sodium chloride | ______ |
| b. | ______ | co-ordinate covalent compound |
| c. | Methane | ______ |
| d. | Fluorine molecule | ______ |
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.
Write down the formula of the compound formed by two of the above elements.
