The atomic number and the mass number of an element M are 25 and 52 respectively.
The number of electrons, protons and neutrons in M2+ ion respectively are:
A
25, 25 and 27
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
25, 27 and 25
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
27, 25 and 27
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
23, 25 and 27
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution
The correct option is D 23, 25 and 27 Number of electrons = number of protons = atomic number of element M
Number of electrons = 25
Number of electrons in M2+ = 23 (the positive charge is due to the loss of electrons)
Number of neutrons = mass number – atomic number
Number of neutrons = 52 - 25 = 27