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Question
Define the term:
orbit
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Solution
Orbit is a circular path around the nucleus in which electrons of the atom revolve.
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RELATED QUESTIONS
(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?
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.
Name an element which does not contain neutron.
What do you think would be the observation of `alpha` particle scattering experiment if carried out on (i) heavy nucleus like platinum (ii) light nuclei like litheum.
Compare :
Sodium atom and sodium ion
Potassium (at No.19) and chlorine (at No.17) react to form a compound. Explain the formation of the compound on the basis of oxidizing agent.
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.
The element that would form cation due to the loss of electrons during the chemical reaction is ______.
Complete the following table:
| a. | Dativebond | ______ |
| b. | CaH2 → Ca+H2 | ______ |
| c. | ______ | Reduction |
| d. | ______ | Redox reaction |
How many electrons are required or released by each atom in chlorine to attain the nearest noble gas configuration?
