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Question
Name the following:
Two atoms having the same number of protons and electrons but different number of neutrons.
Solution
Hydrogen and carbon
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RELATED QUESTIONS
Match the atomic number 4, 8, 14, 15 and 19 with each of the following:
(a) A solid non-metal of valelncy 3.
(b) A gas of valency 2.
(c) A metal of valency 1.
(d) A non-metal of valency 4
What type of bond is formed between two atoms, when the electronegative difference between them is low ?
How many atoms of each kind are present in the following molecule:
Calcium oxide
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.
Name the following:
The shell closest to the nucleus of an atom
Explain
Duplet rule for the formation of hydrogen
Draw orbit structure diagram of calcium oxide (CaO).
State the type of bond between Y and Z and give its molecular formula.
State the type of bonding in the following molecules.
Hydrogen chloride
Match the following:
| 1. | Monoatomic gaseous atom | a. | Electrovalent bond |
| 2. | Octet rule | b. | Benzene |
| 3. | Ionic bond | c. | Water |
| 4. | Non-polar solvent | d. | Electronic theory of valence |
| 5. | Polar solvent | e. | Noble gases |
