The metal atoms are freed from their attachments to nonmetal atoms. Ag occurs in native (or free) as well as in the form of compounds. Assertion : Gold occurs in native state. b. The gold group and platinum group, for example, are all elements that exist in the native state. Give an example of an elementary substance which is a good conductor of electricity but is not a metal. 1. Doubtnut is better on App. 1 Answer. Name two different metallic compounds in each case which occur as. These are copper, platinum, silver, and gold. Metals occur in nature in the free as well as in the combined state. Metals and Non-metals Class 10 MCQs Questions with Answers. (c) Which metal listed in (a) is most likely to occur in the native state. Generally, less active metals are found in native state. Assertion: Reactivity Series is an arrangement of element based on their reactivity. It may occur alloyed with gold as electrum.It often occurs with silver sulfide and sulfosalt minerals. Metallurgy - Ores and minerals . Option 1) Ag,Pt,C,N,O. The earthy impurities such as sand, clay, rocks etc. Identify the metal that occurs in the native state in nature. processes of isolation of elements; Share It On Facebook Twitter Email. Metals occur in nature sometimes in free or native state, but most of these occur in nature in the form of chemical combination, i.e., in the form of their stable compounds which are associated with gangue or matrix. This is because gold when left exposed to air practically does not undergo any change. Non reactive or inert electrode are found as native state. Option 3) Ag,Pt,Pb,Mg. Metals occur in nature in free state or in combined state. associated with ore are collectively known as gangue or matrix. Reason: Elements which are attacked by moisture, oxygen and CO 2 of air occur in native state. She has taught science courses at the high school, college, and graduate levels. ThoughtCo uses cookies to provide you with a great user experience. associated with ore are collectively known as gangue or matrix. NATIVE STATE; The metals are said to be in native state if they are found in their elementary form. Au, Ag and Pt. Best answer. These metals are called noble metals . B. Periodic Table Study Guide - Introduction & History, Alloy Definition and Examples in Chemistry, Ph.D., Biomedical Sciences, University of Tennessee at Knoxville, B.A., Physics and Mathematics, Hastings College. Metals that are found in their native form are antimony, arsenic, bismuth, cobalt, indium, iron, tantalum, tin, tungsten, and zinc. Question 7. As the amount of silver increases, the color becomes whiter and the specific gravity becomes lower. Even a single native element can occur in widely diverse environments. Answer: Silver and gold. 3:48 300+ LIKES. Several of the noble metals, such as gold and platinum, exist free in nature. Name three metals which occur in native state in nature. Silver, copper, iron, osmium, and several other metals also occur in the native state, and a few occurrences are … The metal occurs as nuggets or grains in rocks, underground "veins" and in alluvial deposits You can refer to NCERT Solutions for Class 10 Science Chapter 3 Metals and Non-metals to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams. D. Zinc. Option 4) Ag,Pt 5.6k VIEWS. The rare earth metals are among elements that do not exist in native form. GENERAL CHARACTERISTICS . The noble gases include helium, neon, argon, krypton, xenon, and radon. Metallurgy relate to the science and technology of metals. Asseretion: Iton is found in the free state in nature. answered Dec 18, 2017 by Md samim (94.8k points) selected Dec 18, 2017 by sforrest072 . Au, Pt, noble gases etc. The extraction of pure metals from their natural sources, is linked to the history of human civilisation. 3.1 Which metal occurs in native state? bobtail / ˈbɒbteɪl / noun. Question 6. (b) You are provided with three metals: sodium, magnesium and copper. (c) Which metal listed in (i) is most likely to occur in the native state Question (a) Arrange the following metals in decreasing order of their reactivity Cu, Ca, Mg, Na, Zn. These do not occur in the native state (i.e.,do not occur free in nature). On electrolysis of dil.sulphuric acid using Platinum (Pt) electrode, the product obtained at anode will be: An element has a body centered cubic (bcc) structure with a cell edge of 288 pm. Write the names of the two metals. 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