An element X belongs to fourth period and fifteenth group of the periodic table. Which of the following statements is true?
It has completely filled s-orbital and a partially filled d-orbital.
It has completely filled s-and p -orbitals and a partially filled d-orbital.
It has completely filled s- and p-orbitals and a half filled d-orbital.
It has a half filled p -orbital and completely filled s-and d-orbitals.
The number of lone pairs of electrons on the central atoms of H2O, SnCl2, PCl3 and XeF2 respectively are
2, 1, 1, 3
2, 2, 1, 3
3, 1, 1, 2
2, 1, 2, 3
The correct order of decreasing H-C-H angle in the following molecule is
I> II> III
II> I> III
III> II> I
I> III> II
The correct order of decreasing length of the bond as indicated by the arrow in the following structures is
I >II > III
II > I > III
III > II > I
I > III > II
In SOCl2, the Cl-S-Cl and Cl-S O bond angles are
130° and 115°
106° and 96°
107° and 108°
96° and 106°
In diborane, the number of electrons that accounts for bonding in the bridges is
six
two
eight
four
D.
four
In diborone, odd-electron bonds are found in the bridges. In the given figure, it has 4 electrons present for bonding in the bridges.
The bond angle in NF3 (102.3) is smaller than NH4 (107.2). This is because of
large size of F compared to H
large size of N compared to F
opposite polarity of N in the two molecules
small size of H compared to N