Reactive metals – but less reactive than group 1. The most reactive group of metals – react strongly with cold water ( Videos). Period: number of occupied (electron) shells Names of special groups with characteristic properties Group Name (a) Distinguish between the terms group and period in terms of electron arrangement.Ī: (2 Marks) Group: number of outershell/valence electrons The key take away is, that just by looking at where an element is positioned you can immediately know what it's configuration is.Ĭarbon and silicon belong to the same group of the periodic table. The diagram above shows you how the sp,p,d,f blocks are organized. So it's highest sub level in its electron configuration is P and it is filled with three electrons. E.g Phosphorus is in the third element in the P block.The position within the block tells you the number of electrons int he orbital These blocks represent the highest sublevel occupied by the elements within these blocks. The four needed for IB are the s,p,d,f blocks. The periodic table is separated into different blocks. The periodic table and electron configuration These different types of elements are found in different regions of the periodic table. The periodic table can be classified as non-metals, metals and metalloids.Elements in the same group have the same number of outer electrons and have similar chemical properties.The period number ( n) is the outer energy level that is occupied by electrons.The elements are ordered by increasing atomic number.Groups: Vertical columns of the periodic table Periodic table basics Periods: Horizontal rows of the periodic table
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