Which description best represents Thomson’s atomic model?
Electrons are embedded in a positively charged sphere
J. J. Thomson proposed that an atom is a sphere of positive charge in which the negatively charged electrons are embedded, like seeds in a watermelon or plums in a pudding. The positive and negative charges are equal, so the atom as a whole is neutral.
So Thomson's model has electrons embedded in a positively charged sphere; it has no nucleus.
The idea of a nucleus came from Rutherford's alpha-particle scattering experiment, and the nucleus of most atoms contains neutrons as well as protons. Electrons revolving in circular orbits around the nucleus belong to the Rutherford and Bohr models. An atom as a solid sphere without particles is closer to Dalton's indivisible atom, not Thomson's, since Thomson's model includes electrons.
Hence, Electrons are embedded in a positively charged sphere.
Similar Questions
Consider the following statements regarding Thomson's model of an atom.
Statement I: The atom is a sphere of positive charge with electrons scattered inside it.
Statement II: Thomson's model could explain the presence of the nucleus in an atom.
Which of the following is TRUE?
If an atom of magnesium loses a proton, what happens to its atomic number and identity?
Which element contains only one proton and one neutron among the following?
Which of the following best describes Thomson's model of an atom?
A new isotope has 20 protons, 22 neutrons, and 20 electrons. How does its mass number affect its chemical behavior compared to other isotopes of the same element?
Which of the following best describes why noble gases have a valency of zero?
An element has two isotopes with mass numbers 35 and 37. Which property remains the same in both isotopes?
Which charged particle determines the atomic number of an element?
Which subatomic particle carries a negative charge in an atom?
Which pair of atoms is an example of isotopes?
Important Questions from Structure of Atom
- How many moles of He atoms are present in its 20 u mass ?
Which of the following electron transition in hydrogen atom will require largest amount of energy?
A species having 8 electrons in the third shell is very reactive while the other species having 8 electrons in the third shell is very inactive they are :
Which of the following is the general formula for saturated hydrocarbons?
Which one of the following is the average atomic mass of chlorine atom?
