Periodicity and Ionisation Energy Crossword
This printable crossword puzzle on the topic of Elements & Periodic Table has 10 clues. Answers range from 6 to 17 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
Description
The trends in the properties of elements across a period
The total distance from an atom’s nucleus to the outermost orbital of electron
The attraction of electrons towards the nucleus
The repulsion of outer shell of electrons by inner shells of electrons.
The atomic radii ____________ across a period
The atomic radii ___________ down a group
The energy required to remove 1 mole of electrons from 1 mole of gaseous atoms.
Simple molecules have weak ______________ forces of attraction and so have a low boiling point.
Carbon and silicon have a ______________ structure with strong covalent bonds and so have a high boiling point.
The second IE is _________ than the first IE.
