Respuesta :
The correct answer is Boron.
In this question, it is indicated that there are 2 electron bonds between 3 centers; hence, never confuse this bond with the Be-H bond, which only has 2 centers. And when Be forms three bonds, one of those bonds—the one with the dashed line—does not contain any electrons.
The elemental substance with three centre two electron bond is Boron.
What are the characteristics of the element Boron?
- The fifth element on the periodic table and member of the 13th group is boron. It belongs to group III A and is positioned in the second period.
- The element has a density of 2.37 gm/cc and weighs 10.811 grams when it is isolated from all other impurities (grams per cubic centimeter)
- In terms of appearance, it is a solid at room temperature and is generally categorized as a semi-metal element.
- This substance boils at 4273K and melts at 2348K in the Kelvin scale.
To learn more about Group 3A(13) element refer the link:
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