Question: Predict the missing value (?) for each physical property listed below. The (a) Atomic radius, (b) Density, (c) Melting point are given for two of

Predict the missing value (?) for each physical property listed below. The 

(a) Atomic radius, 

(b) Density,

(c) Melting point are given for two of three alkaline earth metals in Group IIA/2.

Element Ca Sr Ba Atomic Radius 197 pm 215 pm (?) pm Density at 20 C 1.54 g/mL (?) g/mL 3.65 g/mL Melting

Element Ca Sr Ba Atomic Radius 197 pm 215 pm (?) pm Density at 20 C 1.54 g/mL (?) g/mL 3.65 g/mL Melting Point (?) C 769 C 725 C

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