Barry Bonds

main ways that atoms bind together- covalently and ionically. In a covalent bond, two non-metals of similar electro negativities come together to share electrons with each other. These electrons come from the outer-valence shells, and are shared in a way so that both electrons can have satisfactory shells, following the octet rule, where the shells are filled and most stable, like the configuration of a noble gas. Ionic bonds are found between two molecules, where one of the molecule gives…

pediatricians and nurses. In fact everyone has their own opinion of the right way and wrong way. I have learned that in order to learn something you have to make mistakes in order to not make new ones. In my opinion and experience, I believe 100% that the bond between a mother and child can never be broken if you start raising them right from the start meaning every time I feel my child needs me, for example, feeding on demand or changing them when wet/soiled it builds a strong trust factor in…

Question 1 What happen if a person touch liquid nitrogen avoiding the atomic repulsion? It will produce an explosion or nothing will happen? Question 2 It is possible to create an artificial neutron start with the knowledge that humanity have nowadays atoms? (I do not really sure if this question can be considerate part of the course, but at the same time that I watch the podcast, I start to search about neutrons and I found this video in You Tube about the neutron starts, it is origin and it…

containing two or more different halogen atoms. The general formula for interhalogen consists of XYn, where n is equal to 1,3,5 or 7 and the central halogen, X, being less electronegative than halogen Y results in the formation of polarized covalent bonds. This experiment consisted of using experimental techniques to synthesize and decompose highly reactive, thus unstable, interhalogens that seemingly violate the octet rule. Synthesis reaction: KClO3 + I2 + 6HCl → KCl + 2ICl3 + 3H2O…

of the A element atoms from 33.248 to 43.024. However, the total charge density of M and X element atoms does not change significantly, i.e. only from 45.72 to 45.192, and 105.024 to 103.776, respectively. The increased charge density makes the M-A bonds stronger, and thus harder to stretch. The Young’s modulus, shown in Fig. 7, agrees well with the available experimental data, which also linear increase with increasing amount of Si on the A site. Moreover, in the Ti 3 (Si x Al 1−x )C 2 , C 11…

Ordering an Uber has become a staple for urbanites everywhere. Whether one is going to work, get groceries or chill at the beach, you always know what you are going to get when you order an Uber, a smiling courteous driver happy to take you to your next destination, however, these smiles might be in short supply as many drivers are not happy with their current situation. Many other workers in the gig economy set up can sympathize with the Uber drivers as well. Currently, most gig economy workers…

localised and behave almost as they did in isolated atoms. This means that the VBT retains the individuality of the atoms composing molecule. The problem can be resolved by introducing the resonance theory, but with the loss of the original valence bond model. Hund[ 173], Mulliken[ 174], Van Vleck[175], Helsenberg[176], Jones[ 177] and others suggested an alternate treatment which is entirely different and more satisfactory. According to MOT, the valency electrons are considered to be…

These properties are high melting points, are brittle, don’t conduct electricity as a solid, but conduct as an aqueous solution. Ionic compounds have high melting points because there are several strong bonds, a lot of heat energy is needed to break them. They also are brittle because once a force (hit) is applied to the compound, the ions with the same charges, lineup, repel, and split apart. Ionic compounds cannot conduct electricity as a solid because…

In the films The Adventures of Félix, directed by Olivier Ducastel and Jacques Martineau, and Tomboy, directed by Céline Sciamma, both protagonists go through a journey of self discovery and identity searching. Though very different in the substance of the story, the theme is relatively similar, covering concepts ranging from prejudice and peer inclusion or rejection to family tensions and romantic interests. Félix’s story follows him on his own, continuously meeting new people with whom he…

Figure1.3: Band gap vs lattice constants diagram for hexagonal nitride compounds. The typical of measured band gap bowing for ternary alloys AlGaN and InGaN is shown by the solid line track[21]. 1.4. Unique Material properties of Gallium Nitride: The unique material properties of GaN engraves it as an prominent semiconductor material for many electronic and optoelectronic devices[18]. • The wide and direct energy band gap sorts GaN as an appropriate materials for device fabrication in the field…