Bonding and Lone Pairs

1.       Lone pair in a bond ___________

                                     

                                          

• (a)    is shared between two atoms   

• (b) is shared with every atom

• (c) belong to only one atom   

•       (d) only one will be present always

Answer explanation

In chemistry, a lone pair refers to a pair of valence electrons that are not shared with another atom in a covalent bond

1.       The presence of lone pair changes ____________

                                                                           

• (a)    geometry and shape           

•           (b) shape and bond length

• (c) bond length and bond angle   

•    (d) shape and bond angle

1.       What is bond angle in BeCl₂ molecule?

                                                     

• (a)    120⁰       

•                       (b) 109⁰

• (c) 150⁰   

•     

                                                    (d) 180⁰

1.       How many lone pairs are present in H₂O molecule?

                                                                    

                                                            

• (a)    0             

•           (b) 1

• (c) 2           

•                       (d) 3

SHAPE IS ALWAYS EQUAL TO GEOMETRY

• TRUE

• FALSE

SO2 SHAPE AND GEOMETRY :

• BENT, BENT

• TRIGONAL PLANAR, BENT

• BENT, TRIGONAL PLANAR

• TRIGONAL PLANAR , TRIGONAL PLANAR

NH3 HAS ________ SHAPE

• SEE SAW

• TRIGONAL PYRAMIDAL

• TETRAHEDRAL

• T-SHAPE

NH3 HAS _________ GEOMETRY

• TETRAHEDRAL

• BENT

• TRIGONAL PYRAMIDAL

• TRIGONAL BIPYRAMIDAL

AB4E GIVES ________SHAPE

• SEESAW

• BENT

• TRIGONAL BI PYRAMIDAL

• LINEAR

AB3E2 HAS ____ LONE PAIRS

• 1

• 2

• 3

• 5