You visited us 1 times! Enjoying our articles? Unlock Full Access!

Atomic Number and Mass Number

The mass numb...

Question

The mass number of $X$ is 23 which contains 15 electrons. What is the atomic mass of $X$ ?

38

amu

No worries! We‘ve got your back. Try BYJU‘S free classes today!

23

amu

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

18

amu

No worries! We‘ve got your back. Try BYJU‘S free classes today!

None of above

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is D $23$ amu
Mass no. $=$ no. of protons + no. of neutrons
Atomic mass $=$ Mass number $=$ 23

Suggest Corrections

Similar questions

_{11}^{23} Na

6.023 \times 10^{23}

14

N_{2}

4

2

= 1.00893 a m u

= 1.00814 a m u

H e = 4.0039 a m u

4.30 ˚ A

Na

23

Join BYJU'S Learning Program