MyQuestionIcon

1

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

Uses of Radioactivity

Nearly all is...

Question

Nearly all isotopes of elements having mass number _______ are radioactive.

A

Lower than 82

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

B

Higher than 82

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

C

Higher than 69

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

D

Lower than 69

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

Open in App

Solution

The correct option is A Higher than 82
The isotopes of nearly all the elements of atomic number higher than 82 (i.e. lead) are radioactive. There are called the natural radioactive substances.

Suggest Corrections

thumbs-up

0

Similar questions

Q. Elements having atomic number higher than

^{'} 92^{'}

in the periodic table are known as:

Q. The half life period of a radioactive element A is the same as the mean life of another radioactive element B. Initially both of them have the same number of atoms. The radioactive element B decays faster than A. Explain why.

Q. According to the location in periodic table which statement(s) regarding the first ionization energies of specific elements should be true?
I.

L i

has a higher value than

N a .

K

has a higher value than

C s .

N a

has a higher value than

A l

Q. Mass numbers of two isotopes of an element differ by

2

A

A + 2

). Average atomic mass is

0.5

more than the lower mass number. What could be the ratio of the percentage abundance two isotopes respectively?

Q. Mass numbers of two isotopes of an element differ by 2 units (A and A+2). Average atomic mass is 0.5 more than the lower mass number. What could be the ratio of the percentage abundance two isotopes respectively?

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Uses of Radioactivity

PHYSICS

Watch in App

explore_more_icon

Explore more

Uses of Radioactivity

Standard X Physics

Join BYJU'S Learning Program

CrossIcon