This gives graphite its softness and its cleaving properties (the sheets slip easily past one another).. 
Tennesgi (unúnṣeptium,  ) ni orukọ ìgbàdíẹ̀ fun ipilẹṣẹ kẹ́míkà pẹ̀lú ami-ìdámọ̀ ìgbàdíẹ̀ ts (UUS) ati nọmba átọ́mù 117.itọkasi.. 