Firstly, carbon isn't a metal.
Boron is a metalloid.
Beryllium is the least metallic alkaline earth metal, and lithium is the least metallic alkaline metal.
Both are metallic, and have metallic appearances and conduct electricity, but beryllium is more brittle than lithium.
So, I'd say Li and Be are equal.
Among the elements Li, Be, B, and C, lithium (Li) is the most metallic, followed by beryllium (Be). Boron (B) is a metalloid and is less metallic, while carbon (C) is a nonmetal and exhibits no metallic properties. Thus, the order from most to least metallic is Li, Be, B, and C.
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