`{:(,"खण्ड 'अ' ",,"खण्ड 'ब' "),(1.,"बोर त्रिज्या", (a),(-me^(4))/(8n^(2)epsilon_(0)^(2)h^(2))),(2., E_(n),(b),(e^(2))/(2epsilon_(0)nh)),(3.,"रिडबर्ग नियतांक", (c), (nh)/(2pi)),(4., v_(n), (d), (me^(4))/(8epsilon_(0)^(2)ch^(3))),(5., "कोणीय संवेग",(e ),(h^(2)epsilon_(0))/(pi me^(2)).):}`

Answer

1. (e ), 2. (a), 3. (d), 4. (b), 5. (c ).