I’m now going to demonstrate how to bond Beryllium Hydride and what is its molecular geometry…

OK, let's check out the Beryllium right here. So Beryllium is in group 2, 2 valence electrons. Nonbonding: well, all of the valence electrons for Beryllium are involved in bonds, so that's 0. Minus bonding, these right here dvided by 2. Two minus 0 minus 2 is 0, so the formal charge on Beryllium is also 0. There are a total of 16 valence electrons (two from Be atom and seven from each F atom). Therefore, Beryllium will have four protons, four neutrons, and two electrons. You must recognize that the second principal energy level consists of both the 2 s and the 2 p sublevels and so the answer is three. And you have one more electron to worry about. Beryllium has two valence electrons. List the number of valence electrons in each element. Beryllium has two.

The Number Of Valence Electrons In Beryllium

As shown in the image above we begin this process by writing the formula of the molecule. In this case our formula is BeH2. After we write the formula down we use a periodic table or our previous knowledge on the amount of valence electrons for the elements we use. For this problem Be has 2 valence electrons and each H has 1 valence electron. We already know that a bond between molecules is created by 2 electrons. Therefore, we can create 2 bonds, one on each side of Be, as Be is our central atom. Once we have formed the bonds we check for the octet rule or otherwise known as the rule of 8. Since BeH2 does not have enough electrons around it to satisfy the rule of 8 we simply say that it does not satisfy it. If you want you may check the number of bonds that you can make with the application of the number of bonds chart. The chart is divided into 3 columns and 3 rows. In the first column we write the elements we are using. In the second column we write the number of electrons that are needed for the element to be “happy” or complete for each element. In the third column we write the number of electrons that we do have for each element. We add up all of the numbers from each column corresponding to their designated column. In this case the use of the chart is unnecessary as we do not have enough electrons present. The next step is to set up the Lewis Structure of the molecule. According to our structure we can say that the shape of our molecule is Linear.

Number Of Valence Electrons Chart

A 3D image of the shape is given below.