wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

The mass of an electron is approximately equal to 9×1031 kg. If the total mass of an atom is 18×1025 kg, find the ratio of the mass of an electron to the total mass of an atom.

A
12×106
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
2×106
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
12×105
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
2×105
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A 12×106
Mass of an electron =9×1031 kg
Total mass of an atom =18×1025 kg
Ratio of the mass of an electron to the total mass of an atom =Mass of an electronTotal mass of an atom

=9×103118×1025

=9×10319×2×1025

=12×1025×1031 (an=1an)


=12×1025+31 (am×an=am+n)

=12×106

Therefore, option (a.) is the correct one.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Powers with Negative Exponents
MATHEMATICS
Watch in App
Join BYJU'S Learning Program
CrossIcon