Chlorine (17) belongs to which group and perioda)7, 3b)17, 3c)1, 3d)16, 3Correct answer is option 'B'. Can you explain this answer?

Question

Answer

17,3

Answer

Electronic configuration of chlorine is 2,8,7
since the no of shell is 3 therefore period is 3
since in the last shell no of valence electron is more than 2 therefore group no is 10 + no of valence electron ie 10+7 =17
period is 3 and group is 17

Answer

Group 17 because it has 7 electrons in its outermost shell,
period 3 because its no. of shells is 3

Answer

Chlorine (Cl) belongs to Group 17 and Period 3 on the periodic table. Let's break down the explanation for this answer:

Group 17:
- Chlorine belongs to Group 17, also known as Group VIIA or Group 7. This group is commonly called the halogens.
- The elements in this group include fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At).
- Halogens are highly reactive nonmetals and have 7 valence electrons in their outermost energy level.

Period 3:
- Periods on the periodic table represent the number of energy levels or shells that an element's electrons occupy.
- Chlorine is located in Period 3, which means it has 3 energy levels or shells.
- The elements in Period 3 include sodium (Na), magnesium (Mg), aluminum (Al), silicon (Si), phosphorus (P), sulfur (S), chlorine (Cl), and argon (Ar).

Combining Group and Period:
- Group 17 and Period 3 intersect at chlorine (Cl) on the periodic table.
- This intersection indicates that chlorine belongs to both Group 17 and Period 3 simultaneously.

Summary:
- Chlorine (Cl) belongs to Group 17 and Period 3 on the periodic table.
- Group 17 is known as the halogens and includes elements like fluorine, chlorine, bromine, iodine, and astatine.
- Period 3 represents the number of energy levels an element's electrons occupy, and chlorine is located in this period along with other elements such as sodium, magnesium, and sulfur.

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