The number of electrons in each of boron's shells is 2, 3 and its electron configuration is [he] 2s 2 2p 1. the boron atom has a radius of 90 pm and a van der waals radius of 192 pm. boron was discovered by joseph louis gay-lussac and louis jacques thénard in 1808. it was first isolated by humphry davy, also in 1808.
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