What is the general trend of melting and boiling point of transition elements along the period?
Correct answer: C. Increases up to middle then decreases
- A. Increases from left to right
- B. Decreases from left to right
- C. Increases up to middle then decreases
- D. Decreases up to middle than increases
Explanation
Melting and boiling points of transition elements along a period are directly proportional to the number of unpaired electrons. As the unpaired electrons increase up to groups VB and VIB that pairing takes place and the number of unpaired electrons goes on decreasing until it becomes zero at group IIB. So, the melting and boiling points also increase in the middle of the series and then decrease to a minimum level at the end of the series.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Transition Elements
Transition elements are identified by their partially filled d subshells in atoms or common ions. The topic covers the electronic structure of d-block elements, including the filling order of 4s and 3d orbitals, variable oxidation states and the distinction between transition elements and elements with completely filled d subshells.
Practise Transition Elements
531 free Transition Elements MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Transition Elements questions
Those elements in which d or f orbitals are in the process of completion are called _.
Sc mostly exist in which of the following oxidation state?:
Which of the following compounds is sold as fertilizer?
Paramagnetic behaviour of transition elements is due to the presence of:
Why does Cr show 3d54s1 configuration instead of 3d44s2?
Which oxidation is possessed by all the elements of group lll B ?