PDF chapter test TRY NOW
Answer the following questions using the data given below:
1.
| Assertion: | Group \(1\) (1s) elements are known as the alkali elements. |
| Reason: | s-orbital can accommodate only two electrons. |
2.
| Assertion: | Elements in the same vertical column have similar properties. |
| Reason: | Elements have periodic dependence upon the atomic number. |
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