Allotropic and high-pressure modifications

Parts C of the tables present crystallographic data for allotropic and high-pressure modifications of the elements. The left-hand columns contain data for allotropic modifications that are stable at a pressure of 100 kPa over the temperature ranges indicated, and the right-hand columns contain data for modifications stable at higher pressures as indicated. The modifications stable at 100 kPa are denoted by Greek letters... 

Table 2.1-6C Elements of the first period (hydrogen and helium). Allotropic and high-pressure modifications...

Table 2.1-7B(a) Elements of Group lA (CAS notation), or Group 1 (new lUPAC notation). Crystallographic properties (see Table 2.1-7C for allotropic and high-pressure modifications)... 

Table 2.1-17C Elements of Group VIA, or Group 16. Allotropic and high-pressure modifications, cont. ...

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