The image shows the Bohr atomic model for oxygen. Oxygen is perhaps the most important atom on Earth. It is responsible for life as we know it, and it is the most abundant atom on our planet. There are more oxygen atoms on Earth than all the other elements’ atoms combined. It was discovered as an atom by Antoine Lavoisier in 1777.

The image shows the Bohr atomic model for oxygen.

Which of the following electronic transitions in the oxygen atom will result in light emission?
A. ni = 1 ⟶ nf = 2
B. ni = 1 ⟶ nf = 3
C. ni = 3 ⟶ nf = 2
D. ni = 2 ⟶ nf = 3

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am i too late?

explanation:

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.

thats how its supposed to be