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About this type of question: My answer is that beryllium is small in size. So, the charge density (charge/radius) is extremely high. So, the force of attraction between the electrons in orbitals and proton in nucleus is very strong. When beryllium is encountered with the other elements (i.e. chlorine), the electrons cannot loss to environment(due to strong force of attraction), but the beryllium will be polarised to become positively charge and hence attract the electron from other elements to form the covalent compound (BeCl2 which is Cl-Be-Cl). So the beryllium hydride is a polar covalently bonded compound.

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15y ago
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11y ago

180 degrees in the molecular gaseous form BeH2. In the solid state in both the amorphouse form and the more difficult to prepare crystalline form the Be atoms are surrounded by 4 H atoms, with a bond angle of approx 109 0

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14y ago

Compounds of beryllium are NOT covalent! Beryllium is a metal, and metals can only form ionic compounds, not covalent molecules.

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11y ago

yes, the compound BeH2 is covalent. Unlike the other members of group 2 where the hydrides are ionic.

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Q: What is the bond angle of beryllium hydride?
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