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How Likely is a Planet Made Almost Entirely of Metals?

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For this question, the word 'metals' does not refer to elements heavier than hydrogen and helium. It instead refers to metals as defined by the periodic table of elements.

After researching the abundance of chemical elements, it is very clear to me that hydrogen and helium (and occasionally oxygen) far outrank all of the other elements.

In terms of mass fraction in the Milky Way:
Hydrogen = 73.9%
Helium = 24.0%
Oxygen = 1.04%
Which equals 98.94%

The following table shows the cosmological origin of each element: enter image description here

In the scope of the universe:

Just how likely or unlikely to form is a planet composed almost entirely of metals?

For this question, let's define "composed almost entirely of metals" as:

Now, iron is the biggest contender here in terms of metals due to its abundance. But let's not forget about all of the others! (here's a question involving a planet made of iron).

I would love to further ask what the chance of life forming on such a planet would be, but of course that would make this question too broad.

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This post was sourced from https://worldbuilding.stackexchange.com/q/157681. It is licensed under CC BY-SA 4.0.

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