<Tr> <Td> Calcium </Td> <Td> 40.078 (4) </Td> <Td> 1115 </Td> <Td> 842 </Td> <Td> 1757 </Td> <Td> 1484 </Td> <Td> 1.54 </Td> <Td> 1.00 </Td> <Td> 589.8 </Td> <Td> 180 </Td> <Td> Brick - red </Td> <Td> </Td> </Tr> <Tr> <Td> Strontium </Td> <Td> 87.62 (1) </Td> <Td> 1050 </Td> <Td> 777 </Td> <Td> 1655 </Td> <Td> 1382 </Td> <Td> 2.64 </Td> <Td> 0.95 </Td> <Td> 549.5 </Td> <Td> 200 </Td> <Td> Crimson </Td> <Td> </Td> </Tr> <Tr> <Td> Barium </Td> <Td> 137.327 (7) </Td> <Td> 1000 </Td> <Td> 727 </Td> <Td> 2170 </Td> <Td> 1897 </Td> <Td> 3.594 </Td> <Td> 0.89 </Td> <Td> 502.9 </Td> <Td> 215 </Td> <Td> Apple - green </Td> <Td> </Td> </Tr> <Tr> <Td> Radium </Td> <Td> (226) </Td> <Td> 973 </Td> <Td> 700 </Td> <Td> </Td> <Td> 1737 </Td> <Td> 5.5 </Td> <Td> 0.9 </Td> <Td> 509.3 </Td> <Td> 221 </Td> <Td> Crimson red </Td> <Td> </Td> </Tr>

Where are the alkaline earth metals found in nature