Question
Download Solution PDFWhat will be the atomic number of an element X which is placed in period 2 and group 17?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is 9.Key Points
- Element X:-
- The element X placed in period 2 and group 17 is a halogen.
- Halogens are highly reactive non-metals and have 7 valence electrons in their outermost shell.
- Since the element X is placed in group 17, it means it has 7 valence electrons.
- The atomic number of an element is equal to the number of protons in its nucleus.
- Therefore, the atomic number of element X will be 9 as it has 9 protons in its nucleus.
Additional Information
- The atomic number of oxygen is 8, which is the element placed in period 2 and group 16.
- Nitrogen is the element placed in period 2 and group 15 with an atomic number of 7.
- The element with atomic number 10 is neon, which is placed in period 2 and group 18.
Last updated on Jun 13, 2025
-> The SSC CGL Notification 2025 has been released on 9th June 2025 on the official website at ssc.gov.in.
-> The SSC CGL exam registration process is now open and will continue till 4th July 2025, so candidates must fill out the SSC CGL Application Form 2025 before the deadline.
-> This year, the Staff Selection Commission (SSC) has announced approximately 14,582 vacancies for various Group B and C posts across government departments.
-> The SSC CGL Tier 1 exam is scheduled to take place from 13th to 30th August 2025.
-> Aspirants should visit ssc.gov.in 2025 regularly for updates and ensure timely submission of the CGL exam form.
-> Candidates can refer to the CGL syllabus for a better understanding of the exam structure and pattern.
-> The CGL Eligibility is a bachelor’s degree in any discipline.
-> Candidates selected through the SSC CGL exam will receive an attractive salary. Learn more about the SSC CGL Salary Structure.
-> Attempt SSC CGL Free English Mock Test and SSC CGL Current Affairs Mock Test.
-> Candidates should also use the SSC CGL previous year papers for a good revision.