Essays Tagged: "Electron Configuration"

Thallium

THALLIUMMy element was Thallium. It is atomic number 81. It has 81 protons and electrons and 123 neutrons. Thallium has a mass of 204.3833 atomic mass units. Its symbol is Tl. It ... lium has a bluish color after exposure to the air. It is a very soft and malleable metal. It has an electron configuration of 1s22s23s23p64s23d104p65s24d105p64f145d106s26p1. It has 6 electron shells. ...

(2 pages) 37 0 2.5 Mar/1997

Subjects: Science Essays > Chemistry

Technetium

Nalin BalanNUCL 200Paper due 02/07/97TECHNETIUMAtomic Number: 43Atomic Symbol: TcAtomic Weight: (97)Electron Configuration: -18-13-2History, Properties and Uses:(Gr. technetos, artificial) Element 43 ...

(2 pages) 31 1 3.0 Feb/1997

Subjects: Science Essays > Chemistry

This essay is about the element Plutonium. It describes the history, the uses-past and future, all isotopes of this material, apperance, electron configuration, and the half life.

oils at 3505 degrees Kelvin and it has a specific heat of J/gK .13. The atomic radius is A- and the electron configuration is [Rn]7s25f6. At room temperature, plutonium appears to be a silvery metal s ...

(2 pages) 168 9 4.3 Dec/2003

Subjects: Science Essays > Chemistry

Chemical Properties of the element Barium

ic mass of 137.327. The mass is made up of 56 protons and 81 neutrons. There are 6 energy levels of electrons that total 56 and have the S, P, and D orbitals. The electron configuration of Barium is 1 ...

(2 pages) 63 0 4.3 Feb/2004

Subjects: Science Essays > Chemistry

Ap Biology notes.

one more neutron4) Atoms can be represented by simply listing the number of protons, neutrons, and electrons - for example, 2P+; 2n0; 2e- for helium. Which atom represents the 18O isotope of oxygen?A ... ; 10n0; 8e-5) The atomic umber of sulfur is 16. Sulfur combines with hydrogen sulfide. Based on the electron configuration of sulfur, we can predict that the molecular formula of the compound will beA ...

(4 pages) 40 0 3.7 Sep/2005

Subjects: Science Essays > Biology

The periodic table

nt: oxygenii) Symbol: Oiii) Atomic number: 8iv) Mass number: 15.9994 amuv) Number of neutrons: 8vi) Electron configuration:vii) Appearance:viii) Melting point: -218.4°C boiling point: -183.0°C ...

(4 pages) 20 1 3.0 May/2007

Subjects: Science Essays > Chemistry

Vanadium

of 50.9415. There are two isotopes of natural Vanadium, which are: 50V (.24%) and 51V (99.76%). The electron configuration is [Ar] 4s² 3d². The symbol for Vanadium is V. Vanadium was named a ...

(1 pages) 399 0 0.0 May/2001

Subjects: Science Essays > Chemistry

Magnesium is a versatile element that has found its way

24.305 amu. It will melt at 649 degrees Celsius and boil at 1,090 degrees Celsius. Magnesium has an electronegativity of one point two and an oxidation state of two. The last two pieces of information ... be found on the periodic table are the density, which is one point seven three eight g/cm3, and the electron configuration of [Ne]3s2 (Spectrum Chemicals, 2002). Magnesium wa ...

(3 pages) 1490 0 0.0 Feb/2008

Subjects: Science Essays > Chemistry

Chemistry Study Notes - The Periodic Table and What Its Classification of Elements Tells Us

halogens and 8A are the noble gasesClassification of ElementsEach of the group 1A elements has one electron in its highest energy level (thus each element has one valence electron)-atoms in the same ... oms in the same group have similar chemical properties because they have the same number of valence electrons-the energy level of an element’s valence electrons indicates the period on the period ...

(3 pages) 13 1 0.0 Mar/2009

Subjects: Science Essays > Chemistry