Elements of the group 13 to 18 in the periodic table are known as p-Block elements. In these elements, the last electron goes to one of the outermost three p-orbital. Except for He, their valance shell electronic configuration is ns2, np(1-6). Due to the presence of d and f electron in the inner core of heavier p-block elements, there exists a large variation in their physical and chemical properties. Non-metals and metalloids only exist in the p-block. The heaviest element of each group of p-block is the most metallic in nature.
1. Find the amphoteric oxide
2. Graphite has a structural similarity with
3. Which is the correct order of decreasing acidity of lewis acids?
(a) BBr3 > BCl3 > BF3
(b) BF3 > BCl3 > BBr3
(c) BCl3 > BF3 > BBr3
(d) BBr3 > BF3 > BCl3
4. In the presence of KF, AlF3 is soluble in HF. Find the complex formed
5. S-S bond is present in which of the ion pairs
(a) S2O72-, S2O32-
(b) S4O62-, S2O72-
(c) S2O72-, S2O82-
(d) S4O62-, S2O32-
6. Which is the correct order of decreasing bond dissociation enthalpy?
(a) F2 > Cl2 > Br2 > I2
(b) I2 > Br2 > Cl2 > F2
(c) Cl2 > Br2 > F2 > I2
(d) Br2 > I2 > F2 > Cl2
7. Oxygen is not released on heating which of the compounds?
8. Which of the species has a permanent dipole moment?
9. Which of the statement is incorrect for XeO4 ?
(a) four p𝜋-d𝜋 bonds are present
(b) four sp3 – p 𝜎 bonds are present
(c) It has a tetrahedral shape
(d) It has a square planar shape
10. P4O10 has ______ bridging O atoms