1. Atomic structure and The Periodic table (group 0 and the transition metals) Flashcards
Why are Group 0 elements incredibly stable?
because they already have a full outer shell
What are the properties of Group 0 elements?
- they exist as monoatomic atoms
- they are colourless at room temperature
- they are non-flammable
- they are not very reactive
What happens to the melting and boiling points as you go down group 0?
- their boiling points increase
- because there is an increase in electrons leading to a greater intermolecular force
- which requires more energy to overcome
Where are the metals located on the table?
On the left of the staircase
Where are the non-metals located on the table?
to the right of the staircase
What are the properties of transition metals?(7)
- they are good conductors
- they are hard, strong and shiny
- they have high densities
- lower reactivity than group 1 metals
- form ions with multiple charges
- form coloured compounds
- they are used as catalysts
What can transition metals form depending on the oxidation state?
different coloured ions
What charge and coloured compound does chromium form?
- 3+ ion
- purple coloured compound
What charge and coloured compound does Iron form?
- 2+ ion
- Olive coloured compound
What charge and coloured compound does Copper form?
- 2+ ion
- blue coloured compound
What coloured compound does Cobalt form?
Red
What coloured compound does Nickel form?
Bright green
Why are the transition metals dense?
Because the atoms in metals are arranged very compactly
What are transition metals used as?
Catalysts
Why are transition metals hard and strong?
Due to the strong force of attraction between the positive nucleus and negative electrons
