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helium/iron

Published on Nov 20, 2015

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PRESENTATION OUTLINE

1.

HELIUM

ANNIKA AMLIE AND TAYLOR BATEH
2.

HELIUM

3.

GROUP NUMBER

  • 8A
  • located in the p block
Photo by fdecomite
4.

ELECTRON CONFIGURATION

  • 1s2
  • common ionic charges: none, its a stable noble gas with a full 1s orbital
  • number of electrons gained or lost: none
5.

STATE OF MATTER

  • gas at 25 degress C
  • density: 0.0001785 or 1.785 x 10^-4 g/cm^3
6.

COMMON ISOTOPES

  • common isotopes: helium-3 and helium-4
  • abundance: helium-3: 1.34 x 10^-4 %
  • helium-4: 99.999866%
7.

COMMON FORMS

  • no compounds because it doesnt bond with anything
  • common form of element is a gas
8.

USES IN SOCIETY & INTERESTING FACTS

  • used as light weight aircraft fuel
  • combined with hydrogen to use in balloons
  • combined with oxygen and used by deep sea divers
  • 2nd most abundant element
  • created as a result of radioactive decay

Taylor