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प्रश्न
Identify the following reaction as either oxidation or reduction:
K - e- → K+
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उत्तर
Oxidation
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संबंधित प्रश्न
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.
Complete the following table relating to the atomic structure of some elements.
|
Element Symbol |
Atomic Number |
Mass Number |
Numbers of neutrons |
Number of Electrons |
Number of Protons |
|
Li |
3 |
6 |
|
|
|
|
Cl |
17 |
|
20 |
|
|
|
Na |
|
|
12 |
|
11 |
|
Al |
|
27 |
|
|
13 |
|
S |
|
32 |
16 |
|
|
Write the formula of its (X)
sulphate
nitrate
phosphate
carbonate
hydroxide.
Draw orbit structure diagram of sodium chloride (NaCl).
Draw orbit structure diagram of calcium oxide (CaO).
Identify the following reaction as either oxidation or reduction:
Fe3+ + e- → Fe2+
Copy and complete the following table relating to the atomic structure of some elements:
| Element | Atomic Number | Mass Number | Number of protons | Number of Neutrons | Number of Electrons |
| Beryllium | 4 | 9 | |||
| Fluorine | 9 | 10 | |||
| Sodium | 12 | 11 | |||
| Aluminium | 27 | 13 | |||
| Phosphorus | 31 | 15 |
Draw the geometric atomic structure of the following atom showing the number of electrons, protons and neutrons in them:
\[\ce{^40_20Ca}\]
______ theory explains the formation of molecules.
Choose the odd one out and write the reason:
