Ionisation energies Word Scramble
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Question | Answer |
What is an ionisation energy? | The energy required to remove one electron from each atom in one mole of gaseous atoms to form one mole of gaseous 1+ ions |
What is electron shielding? | The repulsion between electrons in different inner shells |
What 3 factors affect ionisation energies? | Atomic radius, nuclear charge and electron shielding |
How many electrons can an s-orbital hold? | 2 electrons |
How many electrons can a p-orbital hold? | 6 electrons |
What is an ionic bond? | The electrostatic attraction between oppositely charged ions |
What is a covalent bond? | A bond formed by a shared pair of electrons |
What is a lone pair? | An outer-shell of electrons not involved in chemical bonding |
What is a dative covalent bond? | A shared pair of electrons provided by only one of the bonding atoms |
What is the bond angle of a trigonal planar? | 120 degrees |
What is the bond angle of a tetrahedral? | 109.5 degrees |
What is the bond angle and shape of water? | Non-linear, 104.5 degrees |
What is electronegativity? | A measure of the attraction of a bonded pair of electrons in a covalent bond |
What is a permanent dipole? | A small charge difference across a bond |
What is a permanent dipole-dipole force? | A weak attractive force between permanent dipoles in neighbouring polar molecules |
What are van der Waals forces? | Attractive forces between induced dipoles in neighbouring molecules |
What is a hydrogen bond? | S strong dipole-dipole attraction between an electron deficient H atom on one molecule and a lone pair of electrons on a highly electronegative atom on a different molecule |
What is metallic bonding? | The electrostatic attraction between positive metal ions and delocalised electrons |
Created by:
Shajida
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