Advertisements
Advertisements
प्रश्न
Stable form of A may be represented by the formula:
पर्याय
A
A2
A3
A4
Advertisements
उत्तर
A
Explanation:
The electronic configuration of A is 1s2, 2s2, 2p6 having no unpaired electrons in the outermost shells. So, an atom having no unpaired electron in its valence shell is said to be stable.
APPEARS IN
संबंधित प्रश्न
Discuss the shape of the following molecules using the VSEPR model:
BeCl2, BCl3, SiCl4, AsF5, H2S, PH3
Although geometries of NH3 and H2O molecules are distorted tetrahedral, bond angle in water is less than that of ammonia. Discuss.
Shape of ClF3 is ______.
Explain VSEPR theory. Applying this theory to predict the shapes of IF7 and SF6.
The H-N-H bond angle in NH3 molecule is ____________.
Select the INCORRECT match.
Elements \[\ce{X, Y}\] and \[\ce{Z}\] have 4, 5 and 7 valence electrons respectively. Which of these compounds will have the highest dipole moment?
Number of lone pair(s) of electrons on central atom and the shape of BrF3 molecule respectively are ______.
Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R:
Assertion A: The H-O-H bond angle in water molecule is 104.5°.
Reason R: The lone pair-lone pair repulsion of electrons is higher than the bond pair-bond pair repulsion.
In the light of the above statements, choose the correct answer from the options given below:
In the following structure, the percentage of the 's' character in the lone pair occupy by the oxygen atom is ______.
Given: Cos θ = −0.99
What is the geometry of a water molecule?
What is the number of lone pair of electrons in IF7?
Identify compound having square pyramidal-shape:from following.
Identify the geometry of TeF4 molecule from the following.
Which of the following molecules have regular geometry without lone pair of electrons in the valence shell of central atom?
Match List-I with List-II.
| List-I | List-II | ||
| A. | XeO3 | I. | sp3d; linear |
| B. | XeF2 | II. | sp3; pyramidal |
| C. | XeOF4 | III. | sp3d3; distorted octahedral |
| D. | XeF6 | IV. | sp3d2; square pyramidal |
Choose the correct answer from the options given below:
Match List-I with List-II:
| List-I (Compound) |
List-II (Shape/Geometry) |
| A. NH3 | I. Trigonal pyramidal |
| B. BrF5 | II. Square planar |
| C. XeF4 | III. Octahedral |
| D. SF6 | IV. Square pyramidal |
Choose the correct answer from the options given below:
