What was a major flaw in j. j. thomson’s plum pudding model?

Explanation:

After the discovery of electron, J.J Thomson proposed 'Plum pudding model' in 1904. As per plum pudding model.

As per plum pudding model,

Positively charged is continuously spread through out the atom and the negatively charged electrons are embedded just like electrons embedded in plum.

Major Drawbacks of Plum pudding model:

As per Thomson's model, protons are uniformly distributed, but actually protons concentrated in a small region called nucleus.

According to Rutherford's model, electrons revolve around the nucleus in stationary orbitals. But in Thomson's model, electrons were embedded.

hey there!

mass = 6.75 g

volume =   9 cm³

therefore:

d = mass / volume

d   = 6.75 / 9

d = 0.7 g/cm³

answer b

metric time was an attempt to create a standard unit of time based off of 10, but it never took off an is not included in the metric system (si)