Advertisements
Advertisements
Question
How does the existence of isotopes contradict Dalton’s atomic theory?
Advertisements
Solution
- Atoms are not indivisible, they can be further divided into fundamental particles electrons, protons and neutrons.
- Every atom of an element is not identical. Isotopes are the atoms of same element with same atomic number but different mass number, that means they have same number of protons and electrons but differ in their number of neutrons.
APPEARS IN
RELATED QUESTIONS
Give the following a suitable word/phrase.
The number of protons present in the nucleus of an atom.
Multiple Choice Questions
The number of electrons in an atom is equal to number of
Complete the table below by identifying A, B, C, D, E and F.
FILL IN THE BLANK
The protons and neutrons are held firmly in the nucleus by strong .........................
Tick the most appropriate answer.
Which of the following is used as a coolant in nuclear reactor?
- liquid sodium
- liquid nitrogen
- cadmium steel rods
- plutonium
ANSWER IN DETAIL
What are the various components of a nuclear power plant?
What are nucleons? How many nucleons are present in phosphorus? Draw its structure.
Name the following:
The element which does not contain any neutron in its nucleus.
Choose the correct option
Rutherford's alpha-particle scattering experiment discovered
What is meant by the term nucleus
