Potassium has the largest atomic radius.
Sodium has a larger atomic radius than aluminum.
K
Not sure what L(s) is supposed to be, but regardless, the oxidation state of Na changes from 1+ in NaOH to zero in Na(s).
2HCl + Na(2)S-----> H(2)S + 2NaCl
4,1,2
The neutral atom of potassium has the largest radius.
Look at your periodic table and you will see that K, potassium, must have the largest radius of these choices. You know that, K + and Na + will be small in radius because they have donated an electron to become positively charged cations.
NA
Na+ is smaller than Na.
Sodium has a larger atomic radius than aluminum.
Na has a higher atomic radius then Na+, since it still has it's outer electron (3s).
K
Postassium, K, has a larger radius than sodium, Na, because it is in the next period on the table but in the same group as sodium.
Rb is the largest, Li the smallest in the row above. Group 1 of the periodic table: Fr > Cs > Rb > K > Na > Li > H
None of the following do.
Lithium atom become the cation Li+.
it goes from +1 to 0