B (Boron) has 3 valence electrons; note that it is in group 3A.
Two electrons, oxidation number 4
====================================== My explaination will be Carbon,the non-metal element that contains of 6electrons,2.4 .....the positive charge 4 valenced electrons will share its electron with 2 oxygen atoms that consists of 4 valenced electrons too,in order to achieve stable octet electron arrangement,thus CO2 is formed
Boron has 3 valence electrons.
Boron has 3 electrons in the outer shell and 2 electrons in the inner.
Boron has 3 valence electrons.
Boron has 3 valence electrons.
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From one - e.g. Copper - to eight - e.g. Nickel.
i don't the answer
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Boron (B) has 5 electrons. In B2, these electrons pair up to form B-B bonds, resulting in all electrons being paired. Therefore, B2 has zero unpaired electrons and is not magnetic.
The symbol for boron is B, and a neutral atom of boron has 5 electrons.