Top answers

The bond angle in a molecule of ammonia (NH3) is 107 degrees so why, when part of a transition metal complex is the bond angle 109.5 degrees.

Ammonia is based off a tetrahedral shape, the central Nitrogen atom has 4 valence (outer) pairs of electrons, 3 in covalent bonds with Hydrogen atoms and one "lone pair" which are not bonded. The t...
DW
Answered by Daniel W. • Chemistry tutor
69350 Views

Why can there be one major product and one minor product after electrophilic addition takes place across a double bond?

This formation of a major product and minor product only occurs if the double bond is unsymmetrical (when the carbon atoms involved in the double bond are bonded to different groups), for example in butene. ...
CF
Answered by Craig F. • Chemistry tutor
25342 Views

contrast covalent and ionic bonding

ionic bonding is the electrostatic attraction between oppositley charged ionsionic bonding is between metals and non metalscovalent bonding is the electrostatic attraction between positive nuclei and negativ...
CE
Answered by Cameron E. • Chemistry tutor
2687 Views

(Essay question) How are cycles important in biology?

To obtain a top mark in an essay for A-level Biology it is vital that you mention areas covered under all the modules of the course- the questions that are asked are usually very broad and your answer should...
SB
Answered by Sarah B. • Chemistry tutor
17038 Views

Calculate the relative formula mass (Mr) of BaCO3

So relative formula mass (M r ) just means the total mass of all the atoms within our molecule. So lets work out how many of each atom we have: Ba - 1, C - 1, O - 3Now we know the relative atomic mass of eac...
MH
Answered by Max H. • Chemistry tutor
11569 Views