amt7an sec 2

What is the molecule which includes each of the following?

•14 electrons.     •2 lone pairs of electrons.    • 2 π bonds.

• C₂H₄

• HCN

• H₂O₂

• N₂

.In the compound CH₂ = CH – CH – C =CH

What is the type of the hybridization in carbon atoms 2,3 ?

• Sp , sp²

• sp³, sp³

• Sp , sp³

• sp² , sp³

Which of these compounds the angle between its bonds approaches 90° ?

• H₂O

• H₂S

• NH₃

• CH₄

The molecular geometry of all the following molecules is linear, except………..…

• C₂H₂

• BeBr₂

• SnCl₂

• CS₂

Which of the following compounds includes ionic and covalent bonds only?

• Calcium bromide.

• Sodium carbonate.

• Methane.

• Ammonium chloride

Which of the following elements can be the element Q in the opposite molecule ?

• Na

• Ca

• S

• SI

What is the correct descending arrangement of the angles shown in the opposite figure?

• W > Z > X

• X > Z > W

• W > X > Z

• X > W > Z

Which of the following molecules obeys the octet rule?

• SbF₅

• SF₆

• SiH₄

• BeH₂

What is (are) the type(s) of hybridization in carbon atoms of the opposite compound?

• sp,sp³

• sp,sp²

• sp³,sp³

• sp², sp³

Among the factors that affect the polarity of the molecule is…………..

• the strength of its bonds.

• its net dipole moment.

• the length of its bonds.

• the number of its bonds