The Periodic Table (Edexcel IGCSE Chemistry (Modular): Unit 1)

What is the electronic configuration of silicon?

Which diagram shows the electronic configuration of a nitrogen atom?

The diagram shows part of the periodic table, with elements represented by the letters M, Q, R and T. The letters in the diagram represent elements but are not their chemical symbols.

Use the Periodic Table to help you answer this question.

Which of these statements is true?

Use the Periodic Table to help you answer this question.

i) Name the element with atomic number 14

(1)

ii) Name the element with a relative atomic mass of 11

(1)

iii) Name the element in Group 2 and Period 3

(1)

i) Determine the number of neutrons in a phosphorus atom with mass number 31

(1)

ii) State the electronic configuration of an aluminium atom.

(1)

iii) State why neon is unreactive.

(1)

The following elements are found in group 0 of the periodic table.

He   Ne   Ar   Kr   Xe   Rn

What explains their similar chemical and physical properties?

Which element, T, Q, R, or M has the electronic configuration 2,8,3?

The diagram shows part of the Periodic Table, with elements represented by the letters L, M, Q, R and T.

The letters in the diagram represent elements but are not their chemical symbols.

Give the letter from the diagram that represents a noble gas.

Elements L and M are in the same group.

State why they have similar chemical reactions.

An atom of element Q has 31 protons.

Use this information to explain how you can determine the number of protons in an atom of element R.

In 1937, an airship full of hydrogen gas flew from Germany to America.

(Source: © Michael Rosskothen/Shutterstock)

Which property of hydrogen makes it a suitable gas to use in an airship?

Explain why helium is now used in airships instead of hydrogen.

Hydrogen is used to manufacture ammonia, NH₃ 

Hydrogen is reacted with nitrogen using an iron catalyst.

i) Give a chemical equation for this reaction.

(1)

ii) State why a catalyst is used in this reaction.

(1)

Mendeleev's Periodic Table was published in 1869, classifying the elements that had been discovered at that time by their atomic weights. Part of his Periodic Table is shown.

Use the information in this table and the Periodic Table to answer the questions.

Hydrogen is an element from Mendeleev's table that is not in the same group of the modern Periodic Table.

Give two reasons why it should not be in Group 1.

Give two reasons why hydrogen could be placed in Group 1.

Give two reasons why hydrogen could be placed in Group 7.

The modern Periodic Table arranges the elements in order of atomic number.

What scientific discoveries allowed elements to be placed in their correct period and group?

How did this knowledge allow elements to be correctly placed?

The table shows the electronic structures of five elements represented by letters, not the chemical symbols of the element.

Give the letters of two elements that belong to the same group in the Periodic Table and state the group that they belong to.

One of the elements can form the giant covalent structure shown.

i) Give the letter of the element that is represented by the atom labelled A.

(1)

ii) State how the diagram shows that the atom labelled B is oxygen.

(1)

Give the letter of the element that is monatomic.

Explain your answer.

Give the letters of two elements that are gases at room temperature.

This question is about chemical elements.

Use the Periodic Table to help you answer this question.

i) Identify the element whose atoms contain 10 neutrons and 9 protons.

(1)

ii) Identify the element whose atoms have the electronic configuration 2.8.5

(1)

Give the name of the compound formed between the element with an electronic configuration of 2.8.6 and the non-metallic element in Group 3.

A white solid is formed from the reaction between the element with an atomic number of 7 and the element with an electronic configuration of 2.8.3

i) State the type of bonding present in the white solid.

(1)

ii) Describe the changes that occur to the atoms of both elements as they react to form the white .

(3)

iii) Give the chemical formula of the white solid.

(1)

The Group 6 element whose oxides are linked to acid rain can react with the element whose electronic configuration is 2.7 to form different compounds.

i) Draw a dot-and-cross diagram to show the bonding in a molecule of the compound formed with a relative molecular mass (M_r) of 70.

(2)

ii) An alternative product with a relative molecular mass (M_r) of 146 is formed under different conditions. Suggest the molecular formula of this product.

(1)