Multi-Electron Configurations and Orbital Diagrams
A dipositive ...
Question
A dipositive ion has an electronic arrangement 2,8,8. Find out the number of electrons, protons, and neutrons in that element if its mass number is 40.
A
20,18,22
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
20,20,20
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
18,20,22
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
20,20,18
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution
The correct option is A20,20,20 Number of electrons in the dipositively charged cation are 18.
So protons will be 20 and number of neutrons will be 40−20=20.
Therefore number of protons, neutrons and electrons in the element are 20, 20 and 20 respectively.