What is the atomic number of carbon?
Answer and explanation
Correct answer: D. 6, the number of protons in its nucleus
- Step 1: The atomic number is the number of protons. Step 2. Carbon has 6 protons. Answer: 6. Why not the others: 12 and 14 are mass numbers.
Practise more Physics and chemistry.
Free questions with an explanation for every one, and full timed DTM University Entrance Test (Uzbekistan) mock tests.
More Physics and chemistry questions
- Which unit is used for force in the SI system?
- A car moving at 20 m/s accelerates at 2 m/sĀ² for 5 s. What is its final speed?
- A resistor of 6 Ī© carries a current of 2 A. What is the voltage across it?
- What is the kinetic energy of a 2 kg object moving at 3 m/s?
- A stone falls from rest for 2 s. Taking g = 10 m/sĀ², how far does it fall?
- Which part of the electromagnetic spectrum has the highest frequency?