answer : the correct option is, (B) 2, 3 and 6.
Answer:
25002m
Explanation:
V = 100 km/h
Converting to m/s, we have
V = (100 x 1000)/3600 = 27.78m/s
t = 15mins = 15 x 60 = 900secs
Displacement =?
Velocity = Displacement /Time
Displacement = Velocity x time
Displacement = 27.78 x 900
Displacement = 25002m
Since displacement and distance are measured in same unit, the distance between A and B is 25002m
Based on the bond length, the molecular weight of the unknown metal X is 23.
<h3>What are ionic compounds?</h3>
Ionic compounds are compounds which are formed between oppositely charged ions.
When hydrogen combines with the group 1 metals, they form ionic compounds.
The group one metals that combine with hydrogen to firm ionic bonds include:
- Lithium to give Lithium hydride with equilibrium bond length of 0.239Å.
- Sodium to give sodium hydride with equilibrium bond length of 1.896Å.
- Potassium to give potassium hydride with equilibrium bond length of 2.321Å
The molecular weight of lithium is 7 g
The molecularweight of sodium is 23
The molecular weight of Potassium is 39.
Therefore, based on the equilibrium bond length, the molecular weight of the unknown metal X is 23.
Learn more about bond length at: brainly.com/question/3405662
