Question

Element E and F has atomic number 14 and 17 respectively. Find their position in the periodic table.

• A. E $\to$ 3rd period; 14th group F $\to$ 3rd period, 17th group
• B. E $\to$ 4th period; 14th group F $\to$ 4th period, 17th group
• C. E $\to$ 4th period; 17th group F $\to$ 4th period, 14th group
• D. E $\to$ 3rd period; 17th group F $\to$ 3rd period, 14th group

Answer 1

The correct option is A E $\to$ 3rd period; 14th group F $\to$ 3rd period, 17th group

The element with atomic number 14 is Si and it belongs to 3rd period and 14th group . The element with atomic number 17 is Cl and it belongs to 3rd period and 17th group.