- Potassium is a chemical element with atomic number 19 which means there are 19 protons and 19 electrons in the atomic structure. The chemical symbol for Potassium is K. The atom consist of a small but massive nucleus surrounded by a cloud of rapidly moving electrons. The nucleus is composed of protons and neutrons.
- Www.rsc.org/periodic-table/ Both the content and design of this site created by the Royal Society of Chemistry (UK) are truly exceptional.
- Atomic mass of Potassium is 39.0983 u.
Each atom of carbon has 6 protons and electrons. The element naturally exists as a mix of three.
Also found in: Thesaurus, Medical, Legal, Financial, Acronyms, Encyclopedia, Wikipedia.
Related to atomic number: Isotopes, atomic weight
atomic number
n. Symbol Z Abbr. at. no.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
atomic number
n (General Physics) the number of protons in the nucleus of an atom of an element. Abbreviation: at. no. Symbol: Z Also called: proton number
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
atom′ic num′ber
n.
the number of protons in the nucleus of an atom of a given element, used to locate the element in the periodic table. Abbr.:at. no.;Symbol:Z
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
atomic number
The number of protons in the nucleus of an atom. In electrically neutral atoms, this number is also equal to the number of electrons orbiting about the atom's nucleus. The atomic number of an element determines its position in the Periodic Table.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
atomic number
1. Or proton number (Z) The number of protons in the nucleus of an atom. If not electrically charged, this is equal to the number of electrons in its shells.
2. The number of protons in the nucleus of an atom.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
| Noun | 1. | atomic number - the order of an element in Mendeleyev's table of the elements; equal to the number of protons in the nucleus or electrons in the neutral state of an atom of an element number - a concept of quantity involving zero and units; 'every number has a unique position in the sequence' magic number - the atomic number of an extra stable strongly bound atomic nucleus: 2, 8, 20, 28, 50, 82 or 126 |
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
atoomnummer
原子序
Atomic Number Of Kr
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995
Want to thank TFD for its existence? Tell a friend about us, add a link to this page, or visit the webmaster's page for free fun content.
Atomic Number Of Krypton 78
Link to this page: Atomic Number Of Kmno4