Elements in the same group of the periodic table show trends in physical properties, such as boiling point. They have the same number of electrons in their outer shell, so they are similar in their chemical properties.
By what other name are the group 0 elements known?
Why are group 0 elements unreactive?
Their atoms have stable electronic structures
They are gases at room temperature
They have low boiling points
What are the products of the reaction of sodium and water?
Sodium hydride and oxygen
Sodium hydroxide and hydrogen
Sodium oxide and hydrogen
Which equation correctly shows the reaction of iron with chlorine gas?
Iron + chlorine → iron chloride
Iron + chlorine → chlorine iodide
Iron + chlorine → chloroiron
How many electrons are in the outer shell of an atom of an alkali metal?
Which of these physical properties do group 1 elements have?
They have high densities
They are hard
They have low melting points compared to other metals
The boiling points of the halogens increase down the group. Which of these statements helps to explain why?
Going down the group, the energy needed to overcome the intermolecular forces gets less
Going down the group, the molecules get larger
Going down the group, the intermolecular forces get weaker
At room temperature, what is the appearance of the product of the reaction of potassium with chlorine?
Shiny silver-coloured solid
Which of these two solutions react together in a displacement reaction?
Bromine and potassium chloride
Bromine and potassium iodide
Chlorine and potassium fluoride
Which of these statements describes the trends in reactivity in groups 1 and 7?
The reactivity of the group 1 elements decreases down the group and the reactivity of the group 7 elements increases down the group
The reactivity of the group 1 and group 7 elements increases down the group
The reactivity of the group 1 elements increases down the group and the reactivity of the group 7 elements decreases down the group