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- How group 1 metals react
- Why reactivity changes down the group
They form 1+ ions so they form ionic bonds with group 7 elements. The reactivity increases as you go down the group because the outer electron is shielded by the nucleus more so there's less of an attraction force. This means the electron is more easily lost, hope this helps!
Group 1 elements react with non-metals to form ionic compounds.
There are main reactions you need to know, i'll use lithium for this example...
Lithium + water ------> Lithium hydroxide + Hydrogen
Lithium + oxygen --------> Lithium oxide
Lithium + chlorine -------> Lithium chloride
Metal + Acid -------> salt + water
thanks all vry much