What is the characteristic angle between atoms in a linear molecule, such as carbon dioxide?
a) 360 degrees
b) 180 degrees
c) 120 degrees
d) 90 degrees
e) 100 degrees

A) 180 degrees

Explanation: According to VSEPR theory,No of electron pairs=

V= no of valence electrons of central atom (carbon) = 4

X= no of monovalent atoms = 0

C= cationic charge = 0

A= anionic charge = 0

No of electron pairs=

Thus as the electron pairs surrounding carbon is 2, the hybridization is . The shape of the molecule is linear and the bond angle is 180 degrees.

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.

wanswer:

explanation: