Chemistry
Which of the following statements is correct with respect to the elements — Na, Mg, Al, Si, P, S and Cl.
- Each element belongs to the same group.
- Valency of each element is the same.
- Each element belongs to the same period.
- They are all metals.
Periodic Table
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Answer
Each element belongs to the same period
Reason — Period 3, known as short period, contains 8 elements i.e., sodium (Na), magnesium (Mg), aluminium (Al), silicon (Si), phosphorous (P), sulphur (S) and chlorine (Cl).
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