myclass24your class. your pace.

ChemistryCLASS 11CBSE

answered 18 May 2026

An atom has an atomic number of 17 and a mass number of 35. How many neutrons does it have?

A.VERIFIED ANSWERfact-checked by tutors

The atom has 18 neutrons.

Number of neutrons = Mass number - Atomic number. So, 35 - 17 = 18 neutrons.

Suggested Q&A

CHEMISTRY · CLASS 11

ChemistryCLASS 11
2.8×10⁻³ mol of CO₂ is left after removing 10²¹ molecules from its ‘x’ mg sample. Find x. (Nₐ = 6.02×10²³ mol⁻¹)
ChemistryCLASS 11
Total number of isomers, considering both structural and stereoisomers of cyclic ethers with the molecular formula C₄H₈O is
ChemistryCLASS 11
What does 1s, 2s, 2p, 3s, 3p mean?
ChemistryCLASS 11
Why is it incorrect to say that an electron is 'stationary' in an atom?
ChemistryCLASS 11
Imagine you have an unknown element. What single piece of information about its subatomic particles would immediately allow you to identify the element?
ChemistryCLASS 11
How does the concept of 'electron shells' or 'energy levels' further refine our understanding of electron 'orbiting'?