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Which of the following compounds are covalent:
(1) H2
(2) CaO
(3) KCL
(4) Na2S
Ans: H2
The angle among the lines joining the nuclei of the bonded atom with a central atom is known as bond angle.
Which one of the following explains light both as a stream of particles and as wave motion: (1) Diffraction (2) γ= h/p (3) Interference (4) Photoelectric effect
Q. Describe Water and Heavy Water? Water, H 2 O, the simple hydride of oxygen is a unique compound. It has extraordinarily high melting and boiling points compared to the other
Chemical nature
This cycloaddition reaction involves sixteen electrons; hence, it must be suprafacial on one component and antarafacial on the other. Thus, it must be a [14s + 2a] or a [14a + 2s]
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The filling of the table defined above leads to a natural division of the periodic table into blocks according to the outer electron configurations of atoms (see Fig. 2). All s blo
what can be understood from the law of multiple proportions?
Which type of bond is formed between similar atoms: (1) Ionic (2) Covalent (3) Coordinate (4) Metallic Ans: Covalent
The outer electronic structure 3s 2 3p 5 is possessed by: (1) Cl (2) O (3) Ar (4) Br ans: Cl
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