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प्रश्न
How do atoms attain noble gas configurations?
उत्तर
Combining atoms attain the noble gas configuration by transferring or sharing electrons.
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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?
Fill in the blank.
___________ single covalent bonds are formed between the carbon and chlorine atoms.
Name the following:
The shell closest to the nucleus of an atom
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.
Identify the following reaction as either oxidation or reduction:
Fe3+ + e- → Fe2+
Number of valence electrons in carbon is ______.
Why are Noble gases inert in nature?
| 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:
Chlorine
Elements A, B and C have atomic number 17, 19 and 10 respectively.
State which one is chemically inert.
