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

Explain the following:

(i) Atomic radius of sodium is greater than that of lithium.


Open in App
Solution

Step-1: Introduction

Atomic radii are the distance of the electrons in the outermost from the atomic nucleus.

Step-2: Trend in the periodic table

It increases from top to bottom in a group and decreases from left to right in a period but is highest for a noble gas.

Step-3: Reason

Sodium (Na) and Lithium (Li) belong to group 1. Sodium has higher atomic radii than Lithium. In Sodium, the outermost shell is M-shell (n=3) but in lithium, the outermost shell is L-shell (n=2). Thus , the increase in number of shells increase the size of the atom in a group.

Step-4: Final answer

Therefore, atomic radius of Sodium is greater than that of Lithium.


flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Newland's Law of Octaves : Assumptions and Limitations
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon