1. The development of MRI imaging technology is one useful spinoff of basic research into structure of the atom. Research‚ however‚ is expensive. Many people argue that high cost of research outweighs its potential benefits. Provide one argument for and one argument against increasing current funding for atomic-structure research. Use specific examples from this lesson in your answer to support each position. (6 marks) Answer: 2. The emission spectrum of an unknown element contains two lines-one
Premium Atom Photon
4s2 3d10 4p6 5s2 4d2 b) Zr4+ exists because Zirconium structure contains 40 electrons. For Zirconium to become chemical stable it must lose 4 electrons (to become a noble gas). So that is why Zr4+ is formed. Compare the stability of the zr atom and zr ion. the electron configuration for Zr is [Kr] 4d2 5s2. Ions are formed by losing electrons in outer shells to obtain more stable electron configurations like those of noble gases. By losing 4 electrons‚ it would have the electron configuration
Premium Atom Electron configuration Large Hadron Collider
Chapter 3 Atoms and Elements 1 3.1 Elements and Symbols Chemistry: An Introduction to General‚ Organic‚ and Biological Chemistry‚ Eleventh Edition Copyright © 2012 by Pearson Education‚ Inc. Elements 2 Elements are • pure substances that cannot be separated into simpler substances by ordinary laboratory processes • the building blocks of matter • listed on the inside front cover of this text Chemistry: An Introduction to General‚ Organic‚ and Biological Chemistry‚ Eleventh Edition Copyright
Free Atom Periodic table
As Chemistry Summary of how the atoms have changed throughout the years? One of the first founders of the idea of atoms was called Democritus‚ which was in 430 BC. He argued that there were an infinite number of different types of atoms. They were all different shape however they were made from the same stuff. He describes atoms as indivisible particles and also explained certain natural occurrences such as the existence of elements. Atomos (in ancient Greek) means “that which cannot be further
Premium Atom Chemistry Chemical element
electrically charged plates and magnets in the cathode ray tube and observing the deflection of the rays he had enough evidence to say that particles smaller than atoms existed. By doing this experiment multiple times he compiled enough data to conclude that the mass of one of these particles‚ which he called an electron‚ was lighter than an atom of hydrogen by around 2‚000 times. He also found the ratio of charge to mass (e/m) would be the same for any electron.
Premium Electron Atom Neutron
Part I Multiple choice or short answer questions 1) (2 points) Identify a solid a. Definite volume and no definite shape b. no definite volume and no definite shape c. definite volume and definite shape 2) (2 points) A substance composed of two or more elements in a fixed‚ definite proportion is a. A solution. b. A heterogeneous mixture. c. An alloy. d. A homogeneous mixture. e. A compound. 3) (2 points) Read the water
Premium Atom Neutron Molecule
Matter is made up and composed of atoms.These atoms have a core called nucleus.Atoms also have electrons orbiting around their nucleus.The core has positive charge while the electrons have negative charge.Rubbing causes unlike atoms to stick and unstick frequently. Atoms "fight" over electrons‚ and the stronger one gets to take the electron home.The triboelectric effect‚also known as triboelectric charging‚is a type of contact electrification on which certain materials become electrically charged
Premium Atom Electric charge Electron
Electronic configuration for zirconium is given below: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d2 b. Use the diagram to explain why the Zr4+ ion exists. (2 marks) When the outer orbitals are filled with applicable number of electrons the element tends to becomes chemically stable under normal conditions. Zirconium atomic structure contains 40 electrons. The nearest noble gas element to zirconium is Krypton‚ which contains 36 electrons.... Electronic configuration for zirconium
Premium Atom Electron configuration
There was a huge evolution as to understanding what an atom was and there were many scientists who helped to make this happen. The first scientist was Democritus‚ he lived from 460 BC to 370 BC. His main theories were that everything is made up of atoms‚ atoms cannot be divided‚ and atoms are small and solid particles. He named the atom “atomos” it was greek word and it means “not able to be divided.” The next scientist who worked with atoms was John Dalton‚ he lived from 1766 to 1844. His main theories
Premium Atom Physics Chemistry
CBSE TEST PAPER-01 CLASS - IX Science (Atoms and Molecules) 1. Atomic radius is measured in nanometers and (a) 1nm = 10-10m (b) 1m = 10-10nm (c) 1m = 10-9nm (d) 1nm = 10-9m 2. Symbol of Iron is :- (a) Ir (b) I 3. Atomicity of chlorine and Argon is (c) Fe [1] (d) None of these [1] [1] (a) Diatomic and Monoatomic (b) Monoatomic and Diatomic (c) Monoatomic and Monoatomic (d) Diatomic and Diatomic 4. Molecular mass of water ( H 2O ) is (a) 18g 5. State law of conservation of Mass
Premium Oxygen Iron Atom