Electron Affinity, by textbook definition it’s the energy absorbed or released when an electron is added to a neutral atom. (Ryerson, 2011, 35) Electron affinity is used in many cases First electron affinity in bromine-35, has -324 kJ mol-1, or -5.39. These values show us, that Bromine released energy, and became stable. Bromine would have had an exothermic reaction when the electron was added to the valence shell. This is because, when non-metals gain electrons, the delta energy is negative because they release energy to form an anion (exothermic process); thus, the electron affinity will be negative (Harwood, 2016). There are 28 shielding electrons in Bromine which mean that there more electron-electron repulsion in Bromine than attraction within the nucleus. Moreover, Bromine only needs one more electron to become stable in its valence shell, since it is in the non-metal group, it already has 7 electrons in its valence shell, and so that one electron would stabilize this element. Overall first electron affinity in Bromine would benefit the element in which it would stabilize and also allow energy to be released. …show more content…
Lithium is a metal, so it would’ve had an endothermic reaction, and gained energy to perform electron affinity. This would be because, in a metal element, when an electron is added to the valence shell it would make an endothermic reaction so energy is needed to sustain that electron. (Harwood, 2016) Furthermore, there are only 2 shielding electrons in Lithium, this would mean Lithium would have a very high attraction between its nucleus and electron, which highlights the fact that it would need more energy to keep that nucleus from attracting the new electron. (Jones, 2014) Nevertheless, Lithium is an element which
A sodium ion (Na+) occurs when a sodium atom loses an electron and gains a positive charge
1. The development of MRI imaging technology is one useful spinoff of basic research into the structure of the atom. Research, however, is expensive. Many people argue that the high cost of research outweighs its potential benefits. Provide one argument for, and one argument against increasing current funding for atomic structure research. Use specific examples from this lesson in your answer to support each position. (6marks)
chemical element here on our own planet Earth. Though it is a rare, unreactive noble gas,
Looking further into batteries(most batteries) during the discharge of electricity, the chemical on the anode releases electrons to the negative terminal and ions into the electrolyte in a process called oxidation. The positive terminal accepts these electrons and thus completes the circuit making the flow of electrons. Between electrolyte solutions the ions move through the salt bridge to maintain electrical
Electrons can get excited by absorbing photons carrying energy. By absorbing a photon an electron's energy increases by exactly E=hf where h is Planck's
What causes the attraction between ions forming an ionic bond? By opposite charges of both ions
The Lab 9 includes an electron configuration from the Lab 7. However, Lab 9 focuses much more in compounds and their electron charges. Some of the procedure includes: electron dot symbol, ionic compound formulas, names of molecular compounds, and shapes of molecules. No tools were required to perform Lab 9 except the writing utensils.
As a hazardous waste, lithium reacts with water or air to generate fires and/or produce explosions. The hazardous waste has a major impact on the quality of water since it reacts violently with water to form
The PH describes how basic or acid a substance is. The greater the PH the more basic the substance will be, but the lower the PH the more acid the substance will be. A PH of 7 is considered neutral and a PH higher of 7 is basic, a PH lower than 7 is acid.The importance of the PH of water is that it determines the biological life that can develop on that specific area. Pure water has a neutral PH of seven but this factor can vary as different chemicals are added to the water, making it more acid or basic.
Acceleration would create a change in magnetic field, which would in turn carry energy away from the nucleus. The electron would eventually slow and be captured by the nucleus. Bohr's model expanded upon Rutherford's and solved many flaws of the previous model "The Bohr Diagram,"). Bohr discovered that the atom consisted of a small, positive nucleus, with negatively charged electrons traveling around it due to the electrostatic force of coulomb's law. (Matthews 2010).
When an electron is added to form an atom, this will form an anion, the added electron will repel to the other electrons and this will then result in an increase in the size of the atom that is presented.
Students: These are some hints about the requirements of a high quality Extended Experimental Investigation for the Queensland Senior Chemistry Syllabus. Guidelines given to you by your teacher should take precedence if there is any doubt. They are addressing a Year 12 EEI but will still guide you for Year 11. They refer to a hypothesis-testing EEI. What’s the purpose of an EEI? You‟ll do an EEI to research a question you have about some chemistry-related phenomena you have come across. In the process you gain a better understanding of the concepts. It does not matter that your experiment has been done a thousand times before or that your teacher already knows the results. What matters is that you don
Electronegativity is a trend in the periodic table, it increases as you move across the periodic table from left to right. This occurs due to a greater charge on the nucleus, causing the electron bonding pairs to be very attracted to atoms placed towards the right of the periodic table. Fluorine is the most electronegative element. Electronegativity decreases as you move down the periodic table. This is caused by an increased amount of shielding, or screening, by the innermost electrons. As you move down the table more electrons are added between the nucleus and the bonding pair, The increase in distance between the nucleus and the bonding pair decreases the attraction between the two. Noble gases do not
I partially agree because in an atom, the number of electrons matches the number of protons. In spite of this, one element is distinct from another element if the number of protons are different.
The Importance of Journeys A thorough study of journeys reveals that a journey is much more than just movement from one place to another. Journeys are about learning and growth, and they have the potential to teach people about themselves and the society in which they live. An Imaginative Journey is one in which the individual doesn't in fact have to go anywhere in the physical sense. The physical journey is replaced by an expedition that is fuelled by the human capacity to imagine.