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Arsenic

Key Stage 2

Meaning

Arsenic is a solid.

Key Stage 3

Meaning

Arsenic is a Group 5 metalloid element, on the Periodic Table, with an atomic number of 33.

About Arsenic

Arsenic has the chemical symbol As.

Atomic Structure

Arsenic as 33 protons and 42 neutrons in its nucleus giving it an Atomic Number of 33 and an atomic mass of 75.
Arsenic is in Period 4 of the Periodic Table because it has 4 electron shells.

Properties

Arsenic is a shiny solid at room temperature.

Key Stage 4

Meaning

Arsenic is a Group 5 metalloid element, on the Periodic Table, with 33 protons in the nucleus.

About Arsenic

Arsenic has the chemical symbol As.

Atomic Structure

The most stable isotope of Arsenic has 42 neutrons in its nucleus giving it an atomic mass of 75.
Arsenic is in Period 4 of the Periodic Table because it has 4 electron shells.

Properties

Arsenic is a metalloid element so in some conditions it is an electrical conductor.
Arsenic is a shiny solid at standard temperature and pressure and has a high melting point.