Question

choose the element with the larger atoms from each of the following pairs. match the words in the left column to the appropriate blanks in the sentences on the right. sn between sn and si, the element with the larger atoms is si between br and ga, the element with the larger atoms is br ga between sn and bi, the element with the larger atoms is bi between se and sn, the element with the larger atoms is se unable to be determined based on periodic properties alone

Explanation:

1. For Sn and Si: Both are in group 14; atomic radius increases down a group, so Sn is larger.
2. For Br and Ga: Both are in period 4; atomic radius decreases left to right, so Ga (left of Br) is larger.
3. For Sn and Bi: Sn (period 5, group14) and Bi (period6, group15) have positions where periodic trends can't directly compare their radii reliably.
4. For Se and Sn: Se is period4, group16; Sn is period5, group14; atomic radius increases down groups, so Sn is larger.

Answer:

Between Sn and Si, the element with the larger atoms is Sn
Between Br and Ga, the element with the larger atoms is Ga
Between Sn and Bi, the element with the larger atoms is unable to be determined based on periodic properties alone
Between Se and Sn, the element with the larger atoms is Sn