Question
Download Solution PDFThe second most abundant element on Earth's crust is:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is Silicon.
- Oxygen is the most abundant element in the earth's crust while silicon is second.
- The compound of silicon and oxygen, which is silica, makes up about 60% of this crust.
Important Points
The abundance of elements in Earth's (continental) crust:
| ELEMENT | PERCENTAGE | ATOMIC NUMBER (Z) |
| Oxygen | 46.1% | 8 |
| Silicon | 28.2% | 14 |
| Aluminium | 8.23% | 13 |
| Iron | 5.63% | 26 |
| Calcium | 4.15% | 20 |
| Hydrogen | 0.140% | 1 |
| Carbon | 0.0200% | 6 |
Last updated on Jun 27, 2025
-> RRB NTPC Under Graduate Exam Date 2025 will be out soon on the official website of the Railway Recruitment Board.
-> RRB NTPC Exam Analysis 2025 is LIVE now. All the candidates appearing for the RRB NTPC Exam 2025 can check the complete exam analysis to strategize their preparation accordingly.
-> The RRB NTPC Admit Card will be released on its official website for RRB NTPC Under Graduate Exam 2025.
-> Candidates who will appear for the RRB NTPC Exam can check their RRB NTPC Time Table 2025 from here.
-> The RRB NTPC 2025 Notification released for a total of 11558 vacancies. A total of 3445 Vacancies have been announced for Undergraduate posts like Commercial Cum Ticket Clerk, Accounts Clerk Cum Typist, Junior Clerk cum Typist & Trains Clerk.
-> A total of 8114 vacancies are announced for Graduate-level posts in the Non-Technical Popular Categories (NTPC) such as Junior Clerk cum Typist, Accounts Clerk cum Typist, Station Master, etc.
-> Prepare for the exam using RRB NTPC Previous Year Papers.
-> Get detailed subject-wise UGC NET Exam Analysis 2025 and UGC NET Question Paper 2025 for shift 1 (25 June) here