Top answers

Chemistry
A Level

Explain how the electron pair repulsion theory can be used to deduce the shape of, and the bond angle in, PF3 .

Number of electrons from P= 5 e , Number of electrons from 3F = 3 e , Total number of electrons around P = 8 e Therefore there is a total number of 4 electron pairs surrounding P. three of which are bond ...

YA
Answered by Yusuf A. Chemistry tutor
3094 Views

State the meaning of the term first ionisation energy

Energy (or enthalpy) needed to remove one electron from one atom.

AE
Answered by Azobir E. Chemistry tutor
1898 Views

What is a transition metal complex?

A transition metal complex is a central metal ion (for example platinum) surrounded by ligands.  Ligands are ions or small molecules that donate a pair of electrons to the central metal ion and surround i...

JB
Answered by Jessica B. Chemistry tutor
2701 Views

What is the electronic configuration for Sulphur?

So firstly, the first two columns in the periodic table are classed as the 's' group, the next 10 groups/columns, which are the transition metals are called the 'd' group, the last 6 colums are classified...

MO
Answered by Mercy O. Chemistry tutor
22988 Views

Which liquid would you expect to have a higher boiling point, Bromine (Br2) or Iodine I2)? Explain your answer.

Correct answer: Iodine .  The asymetirc distribution of electrons leading to an instantaneous dipole would be greater for Iodine than Bormine as it has a higher number of electrons surrounding it's nucleu...

JW
Answered by Jack W. Chemistry tutor
6920 Views

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