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2 February, 15:33

There are six elements in Group 14 on the Periodic Table. One of these elements has the symbol Uuq, which is a temporary, systematic symbol. This element is now known as flerovium.

66 Identify an element in Group 14 that is classified as a metalloid. [1]

67 Explain, in terms of electron shells, why each successive element in Group 14 has a larger atomic radius, as the elements are considered in order of increasing atomic number. [1]

68 State the expected number of valence electrons in an atom of the element flerovium in the ground state. [1]

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  1. 2 February, 16:28
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    Silicon and germanium are metalloids. Atomic radius increases because there are more electron shells. Four valence electrons.
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