Top answers

Chemistry
GCSE

Why does silver have a high melting point?

Silver contains strong metallic bonds (a lattice of positive ions surrounded by a sea of delocalised electrons) which require large amounts of energy to break, therefore has a high melting point.

Answered by Rachel C. Chemistry tutor
6541 Views

Which has a lower boiling point chlorine or bromine, and why?

Chlorine has a lower boiling point as it is smaller in size than bromine. Chlorine has fewer electrons than bromine and fewer electron shells so chlorine is smaller in atomic radius. Size affects the str...

Answered by Gleanneil Faith S. Chemistry tutor
5261 Views

How many electrons are in a chloride ion Cl- and how are they arranged in the shells? a periodic table can be used.

18 total2,8,8(2,8,7 in chlorine atom, one more from another atom to form the negative charge and filling the third shell)

Answered by Melissa M. Chemistry tutor
4482 Views

Describe the bonding in a water molecule.

The molecular formula for water is H20. Two hydrogen atoms and one oxygen atom form a covalent bond. Hydrogen is slightly positively charged and is attracted to oxygen which is slightly negatively charged...

Answered by Emilia S. Chemistry tutor
7062 Views

Why can metals conduct electricity?

Because metal compounds contain delocalised electrons that are free to move about the ionic lattice that forms the metal, carrying charge.

Answered by Aoife M. Chemistry tutor
2423 Views

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