(BLUE) Gp 1/2 Metals Flashcards
Describe the trend down the go 1/2 group
For ionising energy
Gp2
Lower ionising energy which means less energy to react
Which group is more reactive and why
Pg 2
Gp1
Lower ionising energy
Less protons than group two
Larger atomic radius
Use your understanding of of electron structure to explain why there is a partially large increase between the 2nd and 3rd ionising energy of Mg
Pg4
The electrostatic attraction is now stronger on the electrons because there is one less electron sharing the electro static attraction force
Use your understanding of ionising energy to explain why beryllium chloride is a covalent compound while barium chloride is ionic
Pg4
It takes too much energy to ionise beryllium so it is easier to share electrons , barium loses electrons easier therefore can form a ionic compound
Which is more reactive Mg or Ba ? Explain your answer
Pg4
They have both the same electrons in there outer shell however barium has a lower ionising energy therefore con form more ionic bonds
From your understanding of metallic bonding state with an explanation which gp 2 element from magnesium to barium has the highest melting point
Pg 4
Magnesium as it is smaller but it has the same charge , this means that the charge density will be greater.
Metal + water ——>
Hydroxide + hydrogen
Magnesium reacts with water very slowly to produce
Pg 6
Magnesium hydroxide and hydrogen
Magnesium reacts with steam and hot water to produce what
Pg6
Magnesium oxide and hydrogen
Describe the reactivity down or up gp2 with cold water
Pg 6
The reactivity decreases as you go up the gp2 metals with Mg not being very reactive
CaO + H2O —->
Ca(OH)2
Acid + base ——>
Salt + water
Oxide + water ——>
Hydroxide
Oxide + acid ——>
Salt + water
How does solubility decreases or increase down or up a group2 with a solution if sulphate ions or solution of hydroxide ions
Pg8
Solution of sulphate ions : becomes less soluble down the group
Hydroxide ion solution : increases solubility down the group
