G/B

Poisson Ratio

Hardness in GPa

Hardness in N/m

Present

Reported

Graphene

0.770164

0.18361

0.186 [43]

6.796

20.388

Silicene

0.610848

0.318878

0.3 [40] [44]

0.3872

1.1616

Germanene

0.574617

0.332063

0.1657

0.4971

Stenane

0.542175

0.390127

0.02124

0.06372