Watch the animation and select the interactions that can be explained by hydrogen bonding. check all that apply.

a. ch4 molecules interact more closely in the liquid than in the gas phase.
b. hf is a weak acid neutralized by naoh.
c. ice, h2o, has a solid structure with alternating h−o interactions.
d. h2te has a higher boiling point than h2s.
e. hf has a higher boiling point than hcl.

c. Ice, H₂O, has a solid structure with alternating H−O interactions.

e. HF has a higher boiling point than HCl.

Explanation:

For molecules to interact through hydrogen bonding, it is required that there is an H atom bonded to a more electronegative atom, such as N, O or F.

Select the interactions that can be explained by hydrogen bonding. Check all that apply.

a. CH₄ molecules interact more closely in the liquid than in the gas phase.  NO. The electronegativity of C is not high enough to form hydrogen bondings.

b. HF is a weak acid neutralized by NaOH. NO. This reaction occurs in water and it is better explained by ion-ion forces.

c. Ice, H₂O, has a solid structure with alternating H−O interactions. YES. This structure is a consequence of the hydrogen bonding.

d. H₂Te has a higher boiling point than H₂S.  NO. The electronegativities of Te and S are not high enough to form hydrogen bondings.

e. HF has a higher boiling point than HCl. YES. The stronger hydrogen bonding interactions in HF explain the higher boiling point.

assuming that your periodic table has eighteen columns, you should highlight   the four elements in the third column from the left of the table.

neutral atoms of elements after calcium contain d electrons. the energy of d orbitals of a particular main shell lies between the energy of the s and p orbitals of the next main shell. for example, electrons in the have energy higher than those in the orbital while lower than those of the orbital.

by the aufbau principle, electrons fill orbitals one at a time, starting from those of the lowest energy. the orbital is therefore filled right after orbitals and before orbitals.  

potassium has electron configuration and calcium . the s orbital of a main shell holds a maximum of two electrons. the next element would thus have the electron configuration and satisfy the requirements.

a neutral atom of the element contains three electrons on top of the most recent noble gas element. it should thus be placed in the third column of the periodic table. both scandium and yttrium would satisfy the conditions. an aufbau diagram indicates that the 4f orbital is filled before the 5d. however, it appears that exceptions exists for both lanthanum and actinium. neutral atoms of the two d-block elements also demonstrate the and should be highlighted as well.