Note some words can be used more than once or not all.
Potassium has _________ electron shells so its outer electron is ____________ from the nucleus than lithium's outer electron.
Therefore, the attraction between the nucleus and the outer electron is ___________ in potassium so the outer electron is lost _________ easily in potassium. This means that potassium is _________ reactive than lithium.
Other Answer Choices:
stronger
weaker
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more
further
Question 8
8.
Periodic table reactivity of halogens - explanation.
Going down the group the outer electrons become ____________ from the nucleus so the nucleus has _________ attraction for the outer electrons so an electron is gained _________ easily
Other Answer Choices:
less
more
further
closer
f) What period are elements A, C and D in? _____________
g) What period is element E in? _____________
h) Which element is the most reactive alkali metal? ______________ (of the alkali metals present)
i) Which element is the least reactive alkali metal? ______________
j) What do the crosses represent? ______________
k) What do the circles represent? ____________________
Periodic table Halogen properties
Periodic table
Displacement reactions of halogens.
1, Bromine water + potassium chloride solution
_________________________ between bromine and potassium _____________ (reaction mixture remains an orange colour) because chlorine is _________ reactive than bromine
2. Bromine water + potassium iodide
________________________ with potassium ___________as
