Binary fluorides of metalloids and p- block - nonmetals are generally hypervalent , with varying reactivities , period 3 and heavier non-metals can form covalent and volatile fluorides .
Binary fluorides of metalloids and p- block nonmetals are generally hypervalent , with varying reactivities . Period 3 and heavier nonmetals can form covalent and volatile fluorides .

Are these two sentences paraphrases of each other?
yes

'' Plasmodium billbrayi '' infects Eastern chimpanzees ( '' Pan troglodytes '' ) and common chimpanzees ( '' Pan troglodytes schweinfurthii '' ) .
Plasmodium billbrayi infects eastern chimpanzees ( '' pan troglodytes '' ) and chimpanzees ( '' Pan troglodytes schweinfurthii '' ) .

Are these two sentences paraphrases of each other?
yes

In a universal legend Vikramaditya has 32 marks on his body , a characteristic of medieval Tamil emperors .
In a medieval Tamil legend , Vikramaditya has 32 marks on his body , a property of the universal emperors .

Are these two sentences paraphrases of each other?
no

The Stejioara River is a tributary of Barnarel River in Romania .
The Barnarel River is a tributary of the Stejioara River in Romania .

Are these two sentences paraphrases of each other?
no