Question
Download Solution PDFWhich among the following elements has maximum atomic radius ?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is Potassium.
Key Points
- Potassium belongs to a group - (1) and period - (IV) of the periodic table. Hence among the given options, Potassium has a maximum atomic radius.
- Carbon and Nitrogen belong to the period - (II) of the periodic table and on the right side hence it is obvious that atomic radii of Carbon and Nitrogen are very much small than Sodium and Potassium.
- Sodium and Potassium belong to a group - (1) and Potassium is placed below Sodium hence the atomic radius of Potassium more than Sodium.
Important Points
- The atomic size generally decreases across a period as we move from left to right in a particular period. due to an increase in nuclear charge.
- The atomic size generally increases across groups as we move from top to bottom in a particular group due to the addition of new shells to atoms.
Additional Information
| Element | Group | Period | Atomic Number |
| Carbon | 14 | II | 6 |
| Nitrogen | 15 | II | 7 |
| Sodium | 1 | III | 11 |
| Potassium | 1 | IV | 19 |
Last updated on Jul 6, 2025
-> As per the official notification, today, 4th July 2025 is the SSC CGL Last Date to apply online. So in case any candidate is left to register should submit their application form within the SSC CGL Last Date and Time ends.
-> The SSC CGL Notification 2025 has been released on 9th June 2025 on the official website at ssc.gov.in.
-> Bihar Home Guard Result 2025 has been out officially.
-> This year, the Staff Selection Commission (SSC) has announced approximately 14,582 vacancies for various Group B and C posts across government departments.
-> TNPSC Group 4 Hall Ticket 2025 has been released on the official website @tnpscexams.in
-> HSSC Group D Result 2025 has been released on 2nd July 2025.
-> 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.
->The UGC NET Answer Key 2025 June has been released by NTA on its official website.