WebbI 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 … WebbAn 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 …

Name (a) An alkali metal in period 3 and halogen in period 2. (b) …

WebbPotassium (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. 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. colombian army helicopter crash

Solved Part A an alkaline earth metal in period 2 Express - Chegg

The elements in period 2 often have the most extreme properties in their respective groups; for example, fluorine is the most reactive halogen, neon is the most inert noble gas, and lithium is the least reactive alkali metal. All period 2 elements completely obey the Madelung rule; in period 2, lithium and … Visa mer A period 2 element is one of the chemical elements in the second row (or period) of the periodic table of the chemical elements. The periodic table is laid out in rows to illustrate recurring (periodic) trends in the chemical behavior … Visa mer Period 2 is the first period in the periodic table from which periodic trends can be drawn. Period 1, which only contains two elements (hydrogen and helium), is too small to draw any conclusive trends from it, especially because the two elements behave nothing like … Visa mer • Media related to Periodic table row 2 at Wikimedia Commons Visa mer Webb5 apr. 2024 · lithium (Li), chemical element of Group 1 (Ia) in the periodic table, the alkali metal group, lightest of the solid elements. The metal itself—which is soft, white, and lustrous—and several of its alloys and … Webb20 juli 2024 · Since the alkali metals all react with water in the same way, a general equation may be written: 2M ( s) + 2H 2 O ( l) → 2MOH ( a q) + H 2 ( g) with M = K, Li, Na, Rb, or Cs. The symbol M represents any one of the five elements. In addition to their behavior when added to water, the alkali metals react directly with many elements. colombiana online subtitrat in romana