MyQuestionIcon

1

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

Introduction to D and F block elements

The radioacti...

Question

The radioactive element present in first group of s-block is _______.

A

radium

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

B

francium

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

C

caesium

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

D

barium

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

Open in App

Solution

The correct option is B francium
Among the elements of alkali metals (group 1A), Francium is the only radioactive metal.

Suggest Corrections

thumbs-up

0

Similar questions

Q. A radioactive isotope of radium placed in the second group in the periodic table emits one

α

-particle and one

β

-particle. The new element formed is in the ________ group.

Q. A radioactive element is present in VIII group of the periodic table. If it emits one

α

-particle, the new position of the nuclide will be:

Q. Assertion :The last element in a group is radioactive. Reason: In case of elements with high atomic masses, nucleus is unstable.

Q. A block having

12 g

of element is placed in a room. This element is a radioactive element with half-life of

15

years. After how many years will there be just

1.5 g

of the element in the box?

Q. The outer electronic configuration of radioactive element present in IA group is :

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Introduction

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Introduction to D and F block elements

Standard IX Chemistry

Join BYJU'S Learning Program

CrossIcon