Contents
Key Stage 2
Meaning
Key Stage 3
Meaning
Sodium is a Group 1 element with an atomic number of 11.
About Sodium
- Sodium has the chemical formula Na.
- Sodium has 11 protons and 12 neutrons in its nucleus giving it an Atomic Number of 11 and an atomic mass of 23.
- Sodium is a more reactive alkali metal than Lithium but less reactive than Potassium.
- Sodium is more reactive than Carbon on the reactivity series so it must be extracted from its ore using electrolysis.
- Sodium reacts strongly with water to produce Hydrogen gas and Sodium Hydroxide.
- Sodium is a solid at room temperature.
- An atom of Sodium has only 1 electron in its outer shell.
- Sodium ions have lost an electron to become positively charged.
Key Stage 4
Meaning
Sodium is a Group 1 element with 11 protons in the nucleus.
About Sodium
- Sodium has the chemical formula Li.
- The most stable isotope of Sodium has 12 neutrons in its nucleus giving it an atomic mass of 23.
- Sodium is a more reactive alkali metal than Lithium but less reactive than Potassium.
- Sodium is more reactive than Carbon on the reactivity series so it must be extracted from its ore using electrolysis.
- Sodium reacts strongly with water to produce Hydrogen gas and Sodium Hydroxide.
- Sodium is a solid at standard temperature and pressure with a melting point of 97.8 °C.
- An atom of Sodium has only 1 electron in its outer shell.
- Sodium ions have lost an electron to become positively charged.