______ is the only noble gas which does not have 8 electrons in its outermost orbit.
A
Neon
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
Krypton
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
Argon
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
Helium
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution
The correct option is D Helium Helium is a noble gas with atomic number(Z) = 2 and has the same number of electrons in its valence shell as well. It is said to have a duplet of electrons instead of the octet.