The atomic number of Sn is 50. The shape of gaseous SnCl₂ molecule is

• Cl-Sn-Cl

• 

• 

• 

The central carbon atom of a free radical contains

• 6 electrons

• 7 electrons

• 8 electrons

• 10 electrons

Reaction for the formation of NaCl is

• Na(g) + Cl₂(g) → NaCl(s)

• Na(s) + $\frac{1}{2}$Cl₂(g) → NaCl(s)

• Na(g) + $\frac{1}{2}$Cl₂(g) → NaCl(s)

• Na(g) + Cl₂(g) → NaCl(g)

The hybridization state of C atom in butendioic acid is

• sp²

• sp³

• Both (a) and (b)

• sp

Which of the following has least bond energy?

• N${}_2^{2-}$

• N${}_2^{-}$

• N${}_2^{+}$

• N₂

Which of the following species has highest bond energy?

• O${}_2^{2-}$

• O${}_2^{+}$

• O${}_2^{-}$

• O₂

Which of the following is least hydrolysed?

• BeCl₂

• MgCl₂

• CaCl₂

• BaCl₂

88.

The geometry of I${}_3^{-}$ is

• triangular

• linear

• tetrahedral

• T-shape

Which of the following species shows the maximum magnetic moment?

• Mn⁶⁺

• Ni²⁺

• Fe³⁺

• Ag⁺

C-H bond length is least in

• acetylene

• methane

• ethylene

• ethane