alleryStart learning →The total number of protons and neutrons in a nucleus is called its:
ABond number
BMass number
CMole number
DWave number
Answer & Solution
Correct answer: B. Mass number
1. Protons and neutrons together fill the nucleus.
2. Their total has a standard name.
3. That name is the mass number.
_Source: syllabus Physics Part II, Class XII, Chapter 13, Nuclei._
Related questions
The Sun is about 5 × 10⁹ years old. Its hydrogen should last about how much longer?What is the main challenge in controlled thermonuclear fusion?Controlled fusion reactors aim to heat fuel to about what temperature?What will the Sun become after its core hydrogen is exhausted?At about 10⁸ K, a star's core fuses helium nuclei into what?How much energy is released when four hydrogen atoms fuse into helium?The net result of the Sun's proton-proton cycle is four hydrogen forming what?Fusion driven by raising the temperature is called what?