The group number and period number respectively of an element with atomic number 8 are-

This question was previously asked in
RRB JE CBT I - (Held On: 30 May 2019 Shift 1)
View all RRB JE Papers >
  1. 6, 2
  2. 4, 2
  3. 16, 2
  4. 16, 3

Answer (Detailed Solution Below)

Option 3 : 16, 2
Free
General Science for All Railway Exams Mock Test
2.2 Lakh Users
20 Questions 20 Marks 15 Mins

Detailed Solution

Download Solution PDF
The correct answer is 16, 2

Key Points

  • The element with atomic number 8 is Oxygen.
  • Oxygen belongs to Group 16 and is in Period 2 of the periodic table.
  • The group number indicates the number of valence electrons in the outermost shell, while the period number indicates the number of electron shells.
  • In the case of oxygen, it has 6 valence electrons (hence Group 16) and 2 electron shells (hence Period 2).

Additional Information

  • The periodic table is arranged in order of increasing atomic number, which represents the number of protons in an atom's nucleus.
  • Elements in the same group have similar chemical properties because they have the same number of valence electrons.
  • Oxygen is a non-metal and is essential for respiration in most living organisms.
  • The element symbol for oxygen is O.
Latest RRB JE Updates

Last updated on Jul 2, 2025

-> The RRB JE CBT 2 Result 2025 has been released for 9 RRBs Zones (Ahmedabad, Bengaluru, Jammu-Srinagar, Kolkata, Malda, Mumbai, Ranchi, Secunderabad, and Thiruvananthapuram).

-> RRB JE CBT 2 Scorecard 2025 has been released along with cut off Marks.

-> RRB JE CBT 2 answer key 2025 for June 4 exam has been released at the official website.

-> Check Your Marks via RRB JE CBT 2 Rank Calculator 2025

-> RRB JE CBT 2 admit card 2025 has been released. 

-> RRB JE CBT 2 city intimation slip 2025 for June 4 exam has been released at the official website.

-> RRB JE CBT 2 Cancelled Shift Exam 2025 will be conducted on June 4, 2025 in offline mode. 

-> RRB JE CBT 2 Exam Analysis 2025 is Out, Candidates analysis their exam according to Shift 1 and 2 Questions and Answers.

-> The RRB JE Notification 2024 was released for 7951 vacancies for various posts of Junior Engineer, Depot Material Superintendent, Chemical & Metallurgical Assistant, Chemical Supervisor (Research) and Metallurgical Supervisor (Research). 

-> The selection process includes CBT 1, CBT 2, and Document Verification & Medical Test.

-> The candidates who will be selected will get an approximate salary range between Rs. 13,500 to Rs. 38,425.

-> Attempt RRB JE Free Current Affairs Mock Test here

-> Enhance your preparation with the RRB JE Previous Year Papers

Get Free Access Now
Hot Links: teen patti party teen patti joy official mpl teen patti teen patti flush