Question

A picometer (pm) is equal to 1 x 10-¹²m. O-H bond lengths in water are 95.8 pm, while S-H bond lengths in dihydrogen sulfide are 135 pm. Why are S-H bond lengths longer than O-H bond lengths? Hint: consider the size of the atoms of the different elements.

Answer 1

Answer:The length of the bonds between the

atoms

is measured by knowing the distance between the center of each atom. From the

periodic table

, sulfur has an

atomic number

larger than oxygen, so the size of the sulfur atom is larger than the size of the oxygen atom. Therefore, the radius of the sulfur is larger.

Step-by-step explanation:

Answer 2

The S-H bond lengths in dihydrogen sulfide (H2S) are longer than the O-H bond lengths in water (H2O) because sulfur (S) atoms are larger than oxygen (O) atoms.

Step-by-step explanation:

The S-H bond lengths in dihydrogen sulfide (H2S) are longer than the O-H bond lengths in water (H2O) because sulfur (S) atoms are larger than oxygen (O) atoms.

Larger atoms have longer bond lengths because the electrons in the outermost energy level are further from the nucleus and have a larger atomic radius. As a result, the bonding electrons are further apart, resulting in longer bond lengths.

Therefore, the larger size of the sulfur atom compared to the oxygen atom leads to longer S-H bond lengths in dihydrogen sulfide compared to the O-H bond lengths in water.