Ionic Bonding: Examples Sodium chloride Sodium is a Group 1 metal It loses its outer electron to form a sodium ion with a +1 charge (Na+) Chlorine is a Group 7 non-metal It gains 1 electron to form...
Ionic Bonding: Definition As a general rule, metals are on the left of the Periodic Table and nonmetals are on the right-hand side Ionic bonding involves the transfer of electrons from a metallic e...
Electronegativity: Predicting Bond Formation The differences in Pauling electronegativity values can be used to predict whether a bond is covalent or ionic in character Electronegativity & cova...
Electronegativity: Trends Electronegativity varies across Periods and down the Groups of the Periodic Table Down a group There is a decrease in electronegativity going down the Group The nuclear ch...
Electronegativity: Definition Electronegativity is the ability of an atom to attract a pair of electrons towards itself in a covalent bond This phenomenon arises from the positive nucleus’s ability...
Mole Calculations The number of moles of a substance can be found by using the following equation: It is important to be clear about the type of particle you are referring to when dealing with mole...
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Water of Crystallisation Water of crystallisation is when some compounds can form crystals which have water as part of their structure A compound that contains water of crystallisation is called a ...
Empirical & Molecular Formulae The molecular formula is the formula that shows the number and type of each atom in a molecule Eg. the molecular formula of ethanoic acid is C2H4O2 The empirical ...
