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element connections
element connections

... • This element has 30 electrons and is used to galvanize metals to prevent rust. (zinc) • This is the only “happy” atom in the row that iron is in. (krypton) • This element is in the same row as silver and the same column as nitrogen. (antimony) • This element has a valence of 4 and was named after ...
Subatomic Particles
Subatomic Particles

... isotopes, they need an efficient way to specify the number of neutrons in any particular nucleus. The mass number of an atom is the sum of the numbers of protons and neutrons in the nucleus. Given the mass number for a nucleus (and knowing the atomic number of that particular atom), you can determi ...
presentation1-elements-atoms-and-isotopes
presentation1-elements-atoms-and-isotopes

... How many electrons per shell? Each shell has a maximum number of electrons that it can hold. Electrons will fill the shells nearest the nucleus first. 1st shell holds a maximum of 2 electrons 2nd shell holds a maximum of 8 electrons ...
Atoms and Elements: Are they Related?
Atoms and Elements: Are they Related?

... for elements known to date. The periodic table is base on the similarity of properties and reactivities exhibited by certain elements. Later, Henri Moseley ( England,1887-1915) established that each elements has a unique atomic number, which is how the current periodic table is organized. ...
Masses of Atoms
Masses of Atoms

... Atomic Number ~ number of protons in the atom of an element Atomic Mass ~ number of neutrons AND number of protons Isotope ~ atoms of the same element, with different numbers of neutrons Carbon - 12 (6 protons, 6 neutrons) Carbon - 14 (6 protons, 8 neutrons) ...
Atoms and Elements: Are they Related?
Atoms and Elements: Are they Related?

... Finding the Number of Neutrons for an Atom • The protons and neutrons make up the mass of an atom. • If you know the protons (atomic number) then you can find the number of neutrons by subtracting the atomic mass from the # of protons (atomic number). atomic mass - # of protons = # of neutrons ...
1 TEST DATE:
1 TEST DATE:

... fewer____________________________ than will other atoms of the same element. Atoms of the same element with different numbers of neutrons are called ___________________________ . Hydrogen has three isotopes. A hydrogen atom may contain zero, one, or two___________________________ . Every atom of car ...
Chemical Element
Chemical Element

... Bang nucleosynthesis during the first 20 minutes of the universe[9] in a ratio of around 3:1 by mass (approximately 12:1 by number of atoms). Almost all other elements found in nature, including some further hydrogen and helium created since then, were made by various natural or (at times) artificia ...
Word List
Word List

... 1.4 I can describe the charge and location of protons, neutrons, and electrons within the nucleus and shells of an atom. The periodic table is, in many ways, the world’s greatest cheat sheet. The periodic table lists all of the elements (simple substances that make up more complex materials) like go ...
Matching - hrsbstaff.ednet.ns.ca
Matching - hrsbstaff.ednet.ns.ca

... a. Protons, electrons, and neutrons are evenly distributed throughout the volume of the atom. b. The nucleus is made of protons, electrons, and neutrons. c. Electrons are distributed around the nucleus and occupy almost all the volume of the atom. d. The nucleus is made of electrons and protons. ___ ...
Modern Physics
Modern Physics

... • An atom is stable (not radioactive) if it is in the belt of stability • An atom is unstable (radioactive) if it is outside the belt of stability • All elements beyond number 83, Bismuth are unstable - WHY? ...
The History of the Periodic Table
The History of the Periodic Table

... other workers had reported. For the rest of the 19th century, atomic masses were continually revised and improved and new elements were rapidly being discovered By 1817, it was recognized that some elements could be placed into groups, using their physical and chemical properties. Elements with clos ...
1b Atomic Structure
1b Atomic Structure

... that is used today is called the periodic table. When a property is repeated within a regular interval, that property is said to be periodic. The periodic table consists of both rows and columns. The rows across the table are the periods. They a referred to as the first period second period and so o ...
atom - West Ada
atom - West Ada

... Each element has a unique symbol, based on its name. For some elements, only the first letter of the name is used such as oxygen (O), hydrogen (H) or nitrogen (N). Others use the first letter plus one other letter of the element’s name. The first letter is always capitalized and any other letter is ...
What`s Inside an Element
What`s Inside an Element

... In this activity, students will learn about the elements in the periodic table and how to interpret the information for each element. Students will then choose an element and translate the information from the periodic table into a tri-fold model. The cover of the tri-fold would be a picture of the ...
Unit 3 Notes only
Unit 3 Notes only

... Using the information above and your periodic table to answer the ...
Chapter 4, Lesson 2: The Periodic Table
Chapter 4, Lesson 2: The Periodic Table

... The atomic mass of an element is based on the mass of the protons, neutrons, and electrons of the atoms of that element. The mass of the proton and neutron are about the same, but the mass of the electron is much smaller (about 1/2000 the mass of the proton or neutron). The majority of the atomic ma ...
Document
Document

... holding the electron to the nucleus • The shells are designated by letters (K, L, M, N …) where K, the shell closest to the nucleus, has the largest binding energy, so the K electron is the most tightly bound • Maximum number of electrons in each shell: 2 in K shell, 8 in L shell … IAEA ...
The Periodic Table of the Elements
The Periodic Table of the Elements

... weighted according to the natural abundance of each isotope of that element. ...
Chapter 4, Lesson 2: The Periodic Table
Chapter 4, Lesson 2: The Periodic Table

... The atomic mass of an element is based on the mass of the protons, neutrons, and electrons of the atoms of that element. The mass of the proton and neutron are about the same, but the mass of the electron is much smaller (about 1/2000 the mass of the proton or neutron). The majority of the atomic ma ...
Atomic Structure & The Periodic Table
Atomic Structure & The Periodic Table

... In the early 1800’s British scientist John Dalton proposed that each element is made up of tiny particles called atoms. Dalton stated that all of the atoms of a particular element are identical but are different from atoms of all other elements. Daltons theory also assumed that atoms could not be di ...
1 | Page Chemistry Lecture #19: Atomic Number, Isotopes, and
1 | Page Chemistry Lecture #19: Atomic Number, Isotopes, and

... For now, ignore the 14.0067 (I’ll explain what this number is in another lecture). The number 7 is the atomic number of nitrogen. Thus, nitrogen has 7 protons in the nucleus. In a neutral atom, the number of protons in the nucleus is equal to the number of electrons. ...
Dynamic Earth Unit 2 lesson 3 Absolute Dating
Dynamic Earth Unit 2 lesson 3 Absolute Dating

... atom. It differs from a chemical reaction in several ways. • One difference is that chemical reactions do not change the mass of atoms, but nuclear reactions do so by a very small amount by changing the nucleus of an atom. • They can change the number of neutrons • They can change the number of prot ...
10_Chemistry homework
10_Chemistry homework

... Dalton theory described how atoms interacted to form compounds, but never even considered the possibility of subatomic particles. The first of the subatomic particles, the negatively-charged electron, was discovered by J. J. Thomson in 1899. Both Thomson and Ernst Rutherford contributed to the ident ...
2.4 The Periodic Table
2.4 The Periodic Table

... and the percentage of each must be known. • The atomic weight is calculated as the sum of the masses of the individual isotopes for that element. Atomic weight = [(isotope abundance) × (isotope mass)] • The Greek symbol  indicates summing of terms. ...
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Flerovium

Flerovium is a superheavy artificial chemical element with symbol Fl and atomic number 114. It is an extremely radioactive synthetic element. The element is named after the Flerov Laboratory of Nuclear Reactions of the Joint Institute for Nuclear Research in Dubna, Russia, where the element was discovered in 1998. The name of the laboratory, in turn, honours the Russian physicist Georgy Flyorov (Флёров in Cyrillic, hence the transliteration of ""yo"" to ""e""). The name was adopted by IUPAC on 30 May 2012.In the periodic table of the elements, it is a transactinide element in the p-block. It is a member of the 7th period and is the heaviest known member of the carbon group. Initial chemical studies performed in 2007–2008 indicated that flerovium was unexpectedly volatile for a group 14 element; in preliminary results it even seemed to exhibit properties similar to those of the noble gases. More recent results show that flerovium's reaction with gold is similar to that of copernicium, showing that it is a very volatile element that may even be gaseous at standard temperature and pressure, that it would show metallic properties, consistent with it being the heavier homologue of lead, and that it would be the least reactive metal in group 14.About 90 atoms of flerovium have been observed: 58 were synthesized directly, and the rest were made from the radioactive decay of heavier elements. All of these flerovium atoms have been shown to have mass numbers from 284 to 289. The most stable known flerovium isotope, flerovium-289, has a half-life of around 2.6 seconds, but it is possible that this isotope may have a nuclear isomer with a longer half-life of 66 seconds; this would be one of the longest half-lives of any isotope of a superheavy element. Flerovium is predicted to be near the centre of the theorized island of stability, and it is expected that heavier flerovium isotopes, especially the possibly doubly magic flerovium-298, may have even longer half-lives.
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