Advertisements
Advertisements
Complete the following triads by inserting the missing elements.
Ca, ______, Ba
Concept: undefined >> undefined
How are elements grouped into various families in the periodic table?
Concept: undefined >> undefined
Advertisements
Complete the following table:
| Symbol | Atomic No | Electronic Configuration | |
| 1. | He | 2 | ______ |
| 2. | Ne | ______ | 2,8 |
| 3. | Ar | ______ | 2, 8,8 |
| 4. | Na | 11 | ______ |
Concept: undefined >> undefined
The element that would form cation due to the loss of electrons during the chemical reaction is ______.
Concept: undefined >> undefined
______ theory explains the formation of molecules.
Concept: undefined >> undefined
The valency of noble gases is ______.
Concept: undefined >> undefined
______ is the only noble gas that does not have eight electrons in its valence shell.
Concept: undefined >> undefined
Spot the error/correct the wrong statement:
In the formation of compounds, the inner shell electrons of an atom involved in bonding.
Concept: undefined >> undefined
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 |
Concept: undefined >> undefined
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 |
Concept: undefined >> undefined
Choose the odd one out and write the reason:
Concept: undefined >> undefined
Choose the odd one out and write the reason:
Concept: undefined >> undefined
What is a chemical bond?
Concept: undefined >> undefined
Write the basic concept of Kossel – Lewis theory.
Concept: undefined >> undefined
Complete the following table:
| Atoms | Atomic number | Electron distribution | |
| 1. | O | 8 | ______ |
| 2. | N | ______ | ______ |
| 3. | ______ | 17 | ______ |
| 4. | ______ | ______ | 2,8,2 |
Concept: undefined >> undefined
Complete the following table:
| a. | Dativebond | ______ |
| b. | CaH2 → Ca+H2 | ______ |
| c. | ______ | Reduction |
| d. | ______ | Redox reaction |
Concept: undefined >> undefined
| Name of compound | Type of compound | |
| a. | Sodium chloride | ______ |
| b. | ______ | co-ordinate covalent compound |
| c. | Methane | ______ |
| d. | Fluorine molecule | ______ |
Concept: undefined >> undefined
Name the acid present in the given table.
Concept: undefined >> undefined
The Acid secreted in our stomach is ______.
Concept: undefined >> undefined
