The following elements are named after countries except .......
  • Fr
  • Ge
  • I
  • Po
In the periodic table, the elements are arranged in order of increasing .......
  • alphabetical symbol
  • electron number
  • mass number
  • proton number
The name of a gas used in weather balloons is .......
  • chlorine
  • hydrogen
  • neon
  • nitrogen
Li, Na, K and Cs are group 1 elements. The most reactive is .......
  • Cs
  • K
  • Li
  • Na
Which of the following is a halogen?
  • Argon
  • Fluorine
  • Helium
  • Neon
Lithium floats on water as it .......
  • is a non-metallic element
  • is a solid
  • is less dense than water
  • is more dense than water
The name of the element with the symbol Na is .......
  • napthalene
  • neon
  • nickel
  • sodium
A pure substance in which all of the atoms are identical is a description of .......
  • a compound
  • a mixture
  • an alloy
  • an element
The elements in group 7 of the periodic table are .......
  • conductors
  • gases
  • metals
  • non-metals
The following elements are named after famous scientists except .......
  • curium
  • einsteinium
  • nobelium
  • uranium
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