S Block And P Block Elements - Study Mode
[#21] The reagents required for the synthesis of cyclic phosphazene N 4 P 4 Cl 8 are
Correct Answer
(D) PCl 5 and NH 4 Cl
[#22] Which of the following statements is/are true for X? i. X is not isoelectronic with benzene. ii. X undergoes addition reaction with HCI. iii. Electrophilic substitution reaction on X is much faster than that of benzene. iv. X undergoes polymerization at 90°C
Correct Answer
(B) ii only
[#23] The overall charge present on the cyclic silicate anion [Si 6 O 18 ] n- is
Correct Answer
(B) 12
[#24] Pyroxenes are class of silicate minerals, which exhibit a polymeric chain structure, as shown below Its simplest repeating unit is
Correct Answer
(B) [SiO 3 ] 2-
[#25] Using the Wade rule, the structure of B 10 C 2 H 12 can be predicted. The structure and the number of isomers of B 10 C 2 H 12 respectively, are
Correct Answer
(B) closo and three