Please select a subject first
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Give an example of a molecule.
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Give an example of liquid in gas.
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Which of the following metals have low melting and boiling point?
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Relate the names of the following scientists with the statements given below.
Arranged elements into groups containing three elements each.
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Relate the names of the following scientists with the statements given below.
Arranged elements in a group of seven with increasing atomic masses and eighth elements with similar properties kept below the first like eight note in an act of music.
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Relate the names of the following scientists with the statements given below.
Arranged elements in the increasing order of atomic mass.
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Complete the following triads by inserting the missing elements.
Cl, ______, I
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Complete the following triads by inserting the missing elements.
Li, ______, K
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Complete the following triads by inserting the missing elements.
Ca, ______, Ba
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How are elements grouped into various families in the periodic table?
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Complete the following table:
| Symbol | Atomic No | Electronic Configuration | |
| 1. | He | 2 | ______ |
| 2. | Ne | ______ | 2,8 |
| 3. | Ar | ______ | 2, 8,8 |
| 4. | Na | 11 | ______ |
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The element that would form cation due to the loss of electrons during the chemical reaction is ______.
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______ theory explains the formation of molecules.
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The valency of noble gases is ______.
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______ is the only noble gas that does not have eight electrons in its valence shell.
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Spot the error/correct the wrong statement:
In the formation of compounds, the inner shell electrons of an atom involved in bonding.
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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 |
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Match the following:
| 1. | Atomic bond | a. | Oxygen and hydrogen |
| 2. | Atoms with different electronegativities | b. | acceptor bond |
| 3. | An atom that accepts electron pair | c. | covalent bond |
| 4. | Rusting of iron | d. | donor atom |
| 5. | An atom that provides electron pair | e. | oxidation |
| f. | ionic bond |
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Choose the odd one out and write the reason:
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Choose the odd one out and write the reason:
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