Which of the following statements is wrong about isotopes ?
Correct answer: D. they possess different position in the periodic table
- A. they possess different mass number
- B. they possess different physical properties
- C. they possess same chemical properties
- D. they possess different position in the periodic table
Explanation
Isotopes have different mass numbers because they contain different numbers of neutrons, and this can give different physical properties. They have the same atomic number and electron arrangement, so they have similar chemical properties and occupy the same position in the periodic table. The likely mistake is choosing b because isotopes do differ physically, but that statement is not wrong.
Last updated
About Electronic Configuration
Electronic configuration describes how electrons occupy shells, subshells and orbitals around an atom. Questions use the Aufbau principle, Pauli exclusion principle and Hund's rule to write configurations, identify valence electrons, form ions and explain periodic trends, including common exceptions such as chromium and copper.
Practise Atomic Structure
922 free Atomic Structure MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemistry questions like this
Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
A neutral atom A has the electronic configuration: 1s2 2s2 2p6 3s2 3p6 4s1. It will gain or lose electron/s to form most probably an ion of valence:
According to Hund's rule, electrons entering a set of degenerate orbitals will
According to molecular orbital theory, which one of the following will indicate two unpaired electrons?
According to the n plus l rule, which orbital is filled first?
After 3s the sub-shell begin to fill is