46. Ionic compounds like NaCl are _________ at room temperature.
47. Ions are positively or negatively charged particles formed by the ________ or
________ of electrons.
48. The outer most shell is called ___________ and electrons in this are called valence electrons.
49. The reason why atoms bond can be explained on the basis of the _____________.
50. Chemically active elements have an incomplete octet in their _____________ of the atoms.
51. The number of valence electrons available in the atoms decides the type of ________.
52. Elements which have tendency to gain electrons for attaining octet in their valence shell called ____________ character elements. They form anions.
53. Ionic compounds are often __________ with high melting points.
54. The H –H bond length is ______ and Bond (dissociation) energy is __________
55. The F – F bond length is _______ and Bond (dissociation) energy is ________
56. The Cl– Clbond length is _______ and Bond (dissociation) energy is ________
57. The Br – Br bond length is _______ and Bond (dissociation) energy is ________
58. The I – I bond length is ________ and Bond (dissociation) energy is ________
59. The H – F bond length is _______ and Bond (dissociation) energy is _________
60. The H – Clbond length is ________ and Bond (dissociation) energy is _________
61. The H – Br bond length is ________ and Bond (dissociation) energy is ________
62. The H – I bond length is ________ and Bond (dissociation) energy is ________
63. The H – O (of H2O) bond length is ________ and Bond (dissociation) energy is __________
64. The H – N (of NH3) bond length is ________ and Bond (dissociation) energy is __________
65. The H – C (of CH4) bond length is _________ and Bond (dissociation) energy is ________
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