Ba
Barium compounds are used in medical imaging and produce green fireworks.
Physical Properties
| পদাৰ্থ | 137.33 u |
| ঘনত্ব | 3.594 g/cm³ |
| Melting Point | 1000.0 K |
| উত্তাপৰ বিন্দু | 2170.0 K |
| আকৃতি | Silvery gray metallic |
| State at Room Temp | Solid |
রাসায়নিক বৈশিষ্ট্যসমূহ
| ইলেকট্ৰোনেজেটিভিটি | 0.89 (Pauling) |
| 1- তম আইনাইজেশন শক্তি | 502.9 kJ/mol |
| ইলেকট্ৰন | 13.95 kJ/mol |
| Oxidation States | +2 |
প্ৰমাণপত্ৰৰ বৈশিষ্ট্য
| ইলেকট্ৰন | [Xe] 6s2 |
| পৰমাণু | 222.0 pm |
| কোভালেন্ট বেৰিয়াড | 215.0 pm |
| Van der Waals Radius | 268.0 pm |
ডিস্কভাৰী
| আবিষ্কাৰ কৰা হৈছে | Carl Wilhelm Scheele |
| আবিষ্কাৰৰ বছৰ | 1772 |
| অৱস্থান | Uppsala, Sweden |
| Named After | Greek 'barys' meaning heavy |
বিষয়ে Barium
Barium is a soft, silvery alkaline earth metal never found pure in nature. Barium sulfate is used as a radiocontrast agent for digestive X-rays. Barium compounds produce green colors in fireworks.
Uses & Applications
Medical X-ray imaging, oil drilling fluids, fireworks (green color), glass, and rat poison.
মজা কথা
Patients drink barium sulfate before X-rays -- barium is toxic, but the sulfate form is so insoluble it passes through safely.
আইসোটোপ
| Mass Number | অভাৱ | হাফ-লাইফ | Stable |
| 134 | 0.02417% | - | Yes |
| 136 | 0.07854% | - | Yes |
| 137 | 0.11232% | - | Yes |
| 138 | 0.71698% | - | Yes |
ইলেকট্ৰন
[Xe] 6s2