# Minecraft Pi - normalise block name

``

    mc_block_name  id (number_or_symbol)

Given a block id or a block name will return a symbol representing the block name or throw an exception if the id or name isn’t valid.

Introduced in v2.5

## Examples

# Example 1
``
    puts mc_block_name :air
| ``
    #=> :air
# Example 2
``
    puts mc_block_name 0
| ``
    #=> :air
# Example 3
``
    puts mc_block_name 19
| ``
    #=> Throws an invalid block id exception
# Example 4
``
    puts mc_block_name :foo
| ``
    #=> Throws an invalid block name exception