Order the following elements from smallest to largest atomic radius.

a) al, na, s, mg

b) c, sn, pb, si

c) k, se, ca, br

d) be, ca, c, b, mg

e) ga, al, cl, p

f) o, se, s ne

you so much!

Atomic radius is used to measure the size of an element and its mean distance from the center of the nucleus.

Explanation:

The following shows the atomic radius of the elements in ascending order

Option A:The atomic radius of Al,Na,S,Mg given as

Al=143, Na=186, S=104, Mg=160

The ascending order of above element based on their atomic radius value such as; S<Al<Mg<Na  

Option B:The atomic radius of C,Sn,Pb,Si given as

C=77, Sn=141, Pb=175, Si=117

The ascending order of these element based on their atomic radius value such as; C<Si<Sn<Pb

Option C:The atomic radius of K,Se,Ca,Br given as

K=227, Se=117, Ca=197, Br=114

The ascending order of these element based on their atomic radius value such as; Br<Se<Ca<K

Option D:The atomic radius of Be,Ca,C,B,Mg given as

Be=113, Ca=197, C=77, B=83, Mg=160

The ascending order of these element based on their atomic radius value such as; C<B<Be<Mg<Ca

Option E:The atomic radius of Ga,Al,Cl,P given as

Ga=122, Al=143, Cl=99, P=115

The ascending order of these element based on their atomic radius value such as; Cl<P<Ga<Al

Option F:The atomic radius of O,Se,S,Ne given as

O=73, Se=117, S=104, Ne=70

The ascending order of these element based on their atomic radius value such as; Ne<O<S<Se

the answer is na (sodium)