This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
ScanSolve AI Answer
Welcome back — been a while! Let's pick up where you left off. a) Element: L Reason: Metallic character increases down a group and decreases across a period. Element L is positioned lower in Group I than K, making it more metallic than K. Group I elements are generally more metallic than Group III elements, where P is located. Therefore, L is the most metallic. b) (i) One use of element S (a noble gas) is in lighting, for example, in neon signs or as an inert atmosphere in light bulbs. (ii) Some metals, particularly heavy metals like lead or mercury, are harmful to humans because they are toxic. They can accumulate in the body over time, interfering with biological processes, damaging organs such as the brain, kidneys, and liver, and disrupting enzyme function. a) (i) The metals arranged in increasing order of reactivity (least reactive at the top, most reactive at the bottom) are: Gold Lead Iron Aluminium Sodium (ii) From the list, the metal whose metal hydroxide does not undergo thermal decomposition is Sodium. Sodium hydroxide is thermally stable. Send me the next one 📸