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Add sodium hydroxide solution to the substance and if a white precipitate is observed that does not dissolve in excess sodium hydroxide then there are magnesium ions in the substance.
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.
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...
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)
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...
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