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Quizlet periodic table
Quizlet periodic table
Quizlet periodic table
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Practical – Trends in the Periodic Table Reactivity of the group 7 elements - the halogens Ref: Saunders N. 2000, Creative Chemistry You have seen that the Group 1 alkali metal elements increase in reactivity as you go down the group. Sodium is less reactive than potassium, which is less reactive than rubidium (which you weren’t allowed to observe directly!) Today, you will use displacement reactions to work out the order of reactivity of the Group 17 halogen elements using Chlorine, Bromine and Iodine. Hypothesis: I predict that in order of reactivity of the three it will be Chlorine, Bromine than Iodine. They are all in the same group 17 (Halogens) but in different periods which has an effect on the elements properties such as the electronegativity decreasing. Chlorine is the most electronegative so it will steal …show more content…
Cl2 (Chlorine Water) + KBr (potassium bromide)→ KCL( potassium chloride) + Br2 ( Chlorine) Cl2 (Chlorine Water) + KI (potassium iodide)→ KCL( potassium chloride) + I2 ( Iodine) Br2 (Bromine Water) + KI (potassium iodide)→ KBr( potassium bromide) + I2 ( Iodine) Write the electron configuration for each halogen tested, using subshell notation. Contrast the similarities and differences in the configurations. Chlorine 1s2 2s2 2p6 3s2 3p5 or [Ne] 3s2 3p5 . Bromine 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p5 [Ar] 4s2 3d10 4p5 & Iodine 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p5 or [Kr] 5s2 4d10 5p5 Each element is one electron of having a full valence shell and they all have 5 electrons in their P shell. Write the order of reactivity for the halogens, from most to least reactive. In order of most reactive to least reactive it is Fluorine, Chlorine, Bromine, Iodine, Astatine Describe the trend in reactivity of the Group 17 elements compared to their order on the periodic
Then, an amount of KI (solid) about a size that would fit on a match head was dissolved in 0.05 of Potassium Iodate solution and about 1 mL of water and 1 mL of 1 M HCl were added, which exhibited a weak positive test for IO_3^- (aq). After the weak positive test, an amount of KI (solid) about a size that would fit on a match head was dissolved in about 1 mL of water and 1 mL of 1 M HCl, which exhibited a negative
Primo Levi’s personal relationship to his profession as a chemist shows that philosophically and psychologically, he is deeply invested in it. His book THe PeriOdic TaBLe shows that his methodology cannot be classified as either purely objective or purely subjective. He fits into the definition of dynamic objectivity given by Evelyn Fox Keller in her book Reflections on Gender and Science.
-------------------------------------------------------------------- The reactivity series is a table to show which metals are most reactive to the least reactive. Potassium is known as the most reactive and platinum the least. --------------------------------------------------------------
Mention 2 elements that can be isolated from the pitchblende and one uses of any of them?
Germanium is in the fourth period (row) and 14th group (column). The 14th group is the carbon group, the carbon group consists of carbon, silicon, germanium, tin, lead and flerovium. The carbon group and the elements within it have some common
-Metallic Character Trends: the metallic character of an element can be defined as how redly an atom can lose an electron
Group VII Elements - Halogens The Group VII elements are called HALOGENS. The name Halogen means
Six out of Sixteen solutions reacted. The reasoning behind this was because the element that replaced the original element needed to be more reactive. To give
Chlorine symbolised as Cl, is found in group 7, period 3 on the periodic table. It is gas at room temperature with a melting point o...
has 2 energy levels. It is also slightly magnetic and not harmful at all. Oxygen can be
There are two main categories of liniments based on the vihicle used in the prepartion depending on the action desired.
which the various elements are opposed to one another. However this is not enough to explain the
ike the other alkali metals, lithium has a single valence electron that is easily given up to form a cation. Because of this, it is a good conductor of heat and electricity as well as a highly reactive element, though the least reactive of the alkali metals. Lithium's low reactivity compared to other alkali metals is due to the proximity of its valence electron to its nucleus (the remaining two electrons are in lithium's 1s orbital and are much lower in energy, and therefore they do not participate in chemical bonds).
Prediction: Aluminum will be the most reactive because it is in group 3 which has the least amount of electrons to loose.