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Beryllium
Symbol: Be
Atomic number: 4
Atomic mass: 9.012182 u
Electron configuration: [He] 2s²
Van der Waals radius: 153 pm
Melting point: 1287°C, 2349°F, 1560 K
Boiling point: 2468°C, 4474°F, 2741 K
Density: 1.85 g/cm3
बेरिलियम
रासायनिक चिन्ह: Be
परमाणु संख्या: 4
परमाणु भार: 9.012182 u
इलेक्ट्रॉन विन्यास: [He] 2s²
वैन डेर वाल्स त्रिज्या: 153 pm
गलनांक: 1287°C, 2349°F, 1560 K
क्वथनांक: 2468°C, 4474°F, 2741 K
घनत्व: 1.85 g/cm3
Magnesium
Symbol: Mg
Atomic mass: 24.305 u
Atomic number: 12
Electron configuration: [Ne] 3s²
Melting point: 650°C, 1202°F, 923 K
Boiling point: 1090°C, 1994°F, 1363 K
Density: 1.74 g/cm3
Van der Waals radius: 173 pm
मैगनीशियम
रासायनिक चिन्ह: Mg
परमाणु भार: 24.305 u
परमाणु संख्या: 12
इलेक्ट्रॉन विन्यास: [Ne] 3s²
गलनांक: 650°C, 1202°F, 923 K 
क्वथनांक: 1090°C, 1994°F, 1363 K
घनत्व: 1.74 g/cm3
वैन डेर वाल्स त्रिज्या: 173 pm
Calcium
Symbol: Ca
Atomic mass: 40.078 u
Atomic number: 20
Electron configuration: [Ar] 4s²
Van der Waals radius: 231 pm
Melting point: 842°C, 1548°F, 1115 K
Boiling point: 1484°C, 2703°F, 1757 K
Density: 1.54 g/cm3
कैल्शियम
रासायनिक चिन्ह: Ca
परमाणु भार: 40.078 u
परमाणु संख्या: 20
इलेक्ट्रॉन विन्यास: [Ar] 4s²
वैन डेर वाल्स त्रिज्या: 231 pm
गलनांक: 842°C, 1548°F, 1115 K 
क्वथनांक: 1484°C, 2703°F, 1757 K 
घनत्व: 1.54 g/cm3
Strontium
Symbol: Sr
Electron configuration: [Kr] 5s²
Atomic number: 38
Atomic mass: 87.62 u
Van der Waals radius: 255 pm
Melting point: 777°C, 1431°F, 1050 K 
Boiling point: 1377°C, 2511°F, 1650 K
Density: 2.64 g/cm3
स्ट्रोन्शियम
रासायनिक चिन्ह: Sr
इलेक्ट्रॉन विन्यास: [Kr] 5s²
परमाणु संख्या: 38
परमाणु भार: 87.62 u
वैन डेर वाल्स त्रिज्या: 255 pm
गलनांक: 777°C, 1431°F, 1050 K 
क्वथनांक: 1377°C, 2511°F, 1650 K
घनत्व: 2.64 g/cm3
Barium
Symbol: Ba
Atomic mass: 137.327 u
Atomic number: 56
Electron configuration: [Xe] 6s²
Van der Waals radius: 268 pm
Melting point: 727°C, 1341°F, 1000 K
Boiling point: 1845°C, 3353°F, 2118 K
Density: 3.62 g/cm3
बेरियम
रासायनिक चिन्ह: Ba
परमाणु भार: 137.327 u
परमाणु संख्या: 56
इलेक्ट्रॉन विन्यास: [Xe] 6s²
वैन डेर वाल्स त्रिज्या: 268 pm
गलनांक: 727°C, 1341°F, 1000 K
क्वथनांक: 1845°C, 3353°F, 2118 K 
घनत्व: 3.62 g/cm3
Radium
Symbol: Ra
Atomic number: 88
Electron configuration: [Rn] 7s²
Atomic mass: 226 u
Melting point: 696°C, 1285°F, 969 K
Boiling point: 1500°C, 2732°F, 1773 K
Density: 5 g/cm3
रेडियम
रासायनिक चिन्ह: Ra
परमाणु संख्या: 88
इलेक्ट्रॉन विन्यास: [Rn] 7s²
परमाणु भार: 226 u
गलनांक: 696°C, 1285°F, 969 K
क्वथनांक: 1500°C, 2732°F, 1773 K 
घनत्व: 5 g/cm3

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