vice.elements.element.primordial
================================

Type :: ``float``

The abundance of this element by mass following big bang
nucleosynthesis, according to the standard model [1]_ [2]_ [3]_. This
is zero for all elements with the exception of helium, for which it is
0.24672.

Example Code
------------
>>> import vice
>>> vice.elements.Fe.primordial
	0
>>> vice.elements.He.primordial
	0.24672

.. [1] Planck Collaboration et al. (2016), A&A, 594, A13
.. [2] Pitrou et al. (2018), Phys. Rep., 754, 1
.. [3] Pattie et al. (2018), Science, 360, 627