I am an alkali metal in the period 2
Webb9 dec. 2024 · Alkali metals are all soft, shiny reactive metals. Although they are soft enough to cut with a knife, exposing a bright surface, the metals react with water and … Webb27 okt. 2024 · The alkaline earth metals or simply alkaline earths are recognized as an important group and family of elements. These elements are metals. Examples include calcium and magnesium. Group 2 or IIA …
I am an alkali metal in the period 2
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WebbThe alkaline earth metals are the elements that correspond to group 2 of the modern periodic table. This group of elements includes beryllium, magnesium, calcium, strontium, barium, and radium. The elements of this group are quite similar in their physical and chemical properties. For example, all alkaline earth metals are silvery-white ... Webb31 aug. 2024 · The chemical equation for this reaction is: N 2 ( g) + 3 H 2 ( g) ↽ − − ⇀ 2 NH 3 ( g) To yield ammonia, there needs to be a catalyst to speed up the reaction, a high temperature and a high pressure. Ammonia is a reagent used in many chemistry experiments and is used as fertilizer.
WebbScience. Chemistry. Chemistry questions and answers. Part A an alkaline earth metal in period 2 Express your answer as a chemical symbol. 0_ ΑΣΦ RE ? Submit Request Answer Part B group 6A (16), period 3 Express your answer as a chemical symbol. ΑΣΦ ? Submit Request Answer Part a noble gas in period 4 Express your answer as a … Webb4 juli 2024 · The alkali metal peroxides and superoxides are potent oxidants that react, often vigorously, with a wide variety of reducing agents, such as charcoal or aluminum metal. For example, Na 2 O 2 is used industrially for bleaching paper, wood pulp, and fabrics such as linen and cotton.
http://pressbooks-dev.oer.hawaii.edu/chemistry/chapter/the-periodic-table/ WebbAnswer: (a) noble gas; (b) chalcogen; (c) alkaline earth metal; (d) alkali metal. In studying the periodic table, you might have noticed something about the atomic masses of some of the elements. Element 43 (technetium), element 61 (promethium), and most of the elements with atomic number 84 (polonium) and higher have their atomic mass given in ...
Webb11 sep. 2016 · The metalloids are B, Si, Ge, As, Sb, Te, and Po. All elements left of the metalloids are metals and all elements right of the metalloids are nonmetals. The exception is hydrogen, which is a nonmetal. In period 2, the elements left of the metalloid, boron, are lithium and beryllium.
Webb8 okt. 2009 · What alkali metal is in the second period? It is the sodium metal. it is in the 2nd period. Is rubidium an alkaline-earth metal alkali metal transition metal or a … philadelphia television frequency changesWebb(a) An alkali metal in period 3 and halogen in period 2. (b) The noble gas with 3 shells. (c) The non-metals present in period 2 and metals in period 3. (d) The element of period 3 with valency 4 (e) The element in period 3 which does not form oxide (f) The element of lower nuclear charge out of Be and Mg. (g) Which has higher E.A. fluorine or ... philadelphia television hillWebbPotassium (K) is an alkali metal, placed under sodium and over rubidium, and is the first element of period 4. [3] It is one of the most reactive elements in the periodic table, therefore usually only found in compounds. It tends to oxidize in air very rapidly, thus accounting for its rapid reaction with oxygen when freshly exposed to air. philadelphia teenagers turn themselves inWebbI have 26 protons. Iron, Fe 2. My atomic mass is 35.453 Chlorine, Cl 3. I am not really an alkali metal, but since I have 1 electron I behave like them. Hydrogen, H 4. I am a … philadelphia teeth cleaningWebb20 juli 2024 · Group IIA also known as the alkaline-earth metals, include beryllium, magnesium, calcium, strontium, barium, and radium. The last member of the group, Ra, is radioactive and will not be considered here. All alkaline earths are silvery-gray metals which are ductile and relatively soft. philadelphia teeth whiteningWebban alkali metal in Period 3. Express your answer as a chemical symbol. Na Group 7B, Period 4. Express your answer as a chemical symbol. Mn Group 3A, Period 3. Express your answer as a chemical symbol. Al Write the electron arrangement for each of the following elements: Carbon 2,4 Write the electron arrangement for each of the following … philadelphia telephone bookWebbAn alkali metal in period 3 is sodium. Halogen in period 2 is Fluorine. b) Argon has three shells. It is a noble gas with completely filled three shells (K,L and M shell ). Atomic Number of Argon is 18. Thus the electronic configuration is 2,8,8. It has 2 electrons in K shell , 8 electrons in L shell and 8 electrons in M shell. c) philadelphia television news