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प्रश्न
Number of valence electrons in carbon is ______.
पर्याय
2
4
3
5
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उत्तर
Number of valence electrons in carbon is 4
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संबंधित प्रश्न
Mention the basic tendency of an atom which makes it to combine with other atoms.
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?
Give electron dot diagram of the following:
nitrogen
Match the column A with Column B.
|
Column A |
Column B |
|
(i) Sodium chloride (ii) Ammonium ion (iii) Carbon tetrachloride |
Covalent bond Ionic bond Covalent and coordinate bond |
Name an element which does not contain neutron.
Draw orbit structure diagram of calcium oxide (CaO).
An element M burns in oxygen to form an ionic compound MO. Write the formula of the compounds formed if this element is made to continue with chlorine and sulfur separately.
State the type of bonding in the following molecules.
Water,
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.
Draw the geometric atomic structure of the three isotopes of hydrogen and the two isotopes of chlorine.
