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प्रश्न
Element M forms a chloride with the formula MCl2 which is solid with a high melting point. What type of bond is in MCl2. Write the formula of the compound when M combines with sulphur, oxygen, and nitrogen.
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उत्तर
The bond formed between metal and nonmetal is an ionic bond.
The bond formed between metal M and chlorine is an ionic bond.
When metal M combines with sulphur – MgS
When metal M combines with oxygen – MgO
When metal M combines with nitrogen – Mg3N2.
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संबंधित प्रश्न
Define a chemical bond.
Give electron dot diagram of the following:
methane
Element X is a metal with a valency 2. Element Y is a non metal with a valency 3.
(a) Write equations to show how X and Y form ions.
(b) If Y is a diatomic gas, write the equation for the direct combination of X and Y to form a compound.
What is an α (alpha) particle?
Match the atomic numbers 4, 14, 8, 15 and 19 with each of the following:
- A solid non-metal of valency 3.
- A gas of valency 2.
- A metal of valency 1.
- A non-metal of valency 4.
How do atoms attain noble gas configurations?
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.
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.
| Name of compound | Type of compound | |
| a. | Sodium chloride | ______ |
| b. | ______ | co-ordinate covalent compound |
| c. | Methane | ______ |
| d. | Fluorine molecule | ______ |
