Electronic structure

This question is about elements in the periodic table.

Describe where the non-metallic elements are found in the periodic table.

Gallium (Ga) is a metallic element in Group 3.

Which of these properties of gallium is not typical of most metals?

Tick () one box.

A sodium atom can be represented as²³₁₁Na

Complete Figure 12 to show the electronic structure of a sodium atom.

Mendeleev created an early periodic table.

Mendeleev placed most of the elements in order of atomic weight.

Tellurium and iodine were not placed in order of atomic weight.

Why did Mendeleev not place tellurium and iodine in order of atomic weight?

Argon is an element in Group 0 of the periodic table.

Explain why argon is unreactive.

An element X consists of two isotopes.

What is meant by ‘isotopes’?

Answer in terms of subatomic particles.

Table 5 shows the mass numbers and percentage abundances of the isotopes of X.

Which is the closest estimate to the relative atomic mass of X ?

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This question is about elements in the periodic table.

Describe where the non-metallic elements are found in the periodic table.

Gallium (Ga) is a metallic element in Group 3.

Which of these properties of gallium is not typical of most metals?

Tick () one box.

A sodium atom can be represented as²³₁₁Na

Complete Figure 1 to show the electronic structure of a sodium atom.

Mendeleev created an early periodic table.

Mendeleev placed most of the elements in order of atomic weight.

Tellurium and iodine were not placed in order of atomic weight.

Why did Mendeleev not place tellurium and iodine in order of atomic weight?

Argon is an element in Group 0 of the periodic table.

Explain why argon is unreactive.

An element X consists of two isotopes.

What is meant by ‘isotopes’?

Answer in terms of subatomic particles.

Table 1 shows the mass numbers and percentage abundances of the isotopes of X.

Which is the closest estimate to the relative atomic mass of X ?

Tick () one box.

This question is about the periodic table.

Sodium and potassium are in Group 1 of the periodic table.

Give one similarity and one difference between the electronic structures of sodium and potassium.

Group 1 elements react with water.

Give two observations made when potassium reacts with water.

Potassium hydroxide solution is produced when potassium reacts with water.

What is the colour of universal indicator when added to potassium hydroxide solution?

Give one reason for your answer.

Colour of universal indicator

Table 4 shows the densities of some of the elements in Group 0 of the periodic table.

Plot the data from Table 4 on Figure 15.

Estimate the density (X) of krypton.

Use Figure 15 and Table 4.

The elements in Group 7 are called the halogens.

A more reactive halogen can displace a less reactive halogen from a solution of its salt.

Which combination of solutions will produce a reaction when mixed?

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Which of the following describes the trends going down Group 7?

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This question is about metals and non-metals.

Figure 15 shows an outline of part of the periodic table.

Element Q is a dull solid with a melting point of 44 °C.

Element Q does not conduct electricity.

Which section of the periodic table in Figure 15 is most likely to contain element Q ?

Tick (✓) one box.

Element R forms ions of formula R²⁺ and R³⁺

Which section of the periodic table in Figure 15 is most likely to contain element R ?

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Give two differences between the physical properties of the elements in Group 1 and those of the transition elements.

Complete Figure 16 to show the electronic structure of an aluminium atom.

Use the periodic table.

Aluminium is a metal.

Describe how metals conduct electricity.

Answer in terms of electrons.

Name the type of bonding in compounds formed between metals and non-metals.

Magnesium oxide is a compound formed from the metal magnesium and the non-metal oxygen.

Describe what happens when a magnesium atom reacts with an oxygen atom.

You should refer to electrons in your answer.

This question is about metals and non-metals. Figure 1 shows an outline of part of the periodic table.

Element Q is a dull solid with a melting point of 44 °C. Element Q does not conduct electricity. Which section of the periodic table in Figure 1 is most likely to contain element Q ?

Tick (✓) one box.

Element R forms ions of formula R²⁺ and R³⁺ Which section of the periodic table in Figure 1 is most likely to contain element R ?

Tick (✓) one box.

Give two differences between the physical properties of the elements in Group 1 and those of the transition elements.

Complete Figure 2 to show the electronic structure of an aluminium atom. Use the periodic table.

Aluminium is a metal. Describe how metals conduct electricity. Answer in terms of electrons.

Name the type of bonding in compounds formed between metals and non-metals.

Magnesium oxide is a compound formed from the metal magnesium and the non-metal oxygen. Describe what happens when a magnesium atom reacts with an oxygen atom. You should refer to electrons in your answer.