<h3><u>Answer;</u></h3>
Hydrogen bonding causes water to be strongly cohesive.
<h3><u>Explanation;</u></h3>
- The strong hydrogen bonds give water a high cohesiveness and, consequently, surface tension.
- Hydrogen bonding makes ice less dense than liquid water and since ice is less dense than water, it is able to float at the surface of water.
- Water is considered the universal solvent due to its ability to dissolve or dissociate most compounds, a property that results from its polarity, where oxygen has a higher electronegativity than hydrogen.
Answer:
4.86 × 10^-7m
Explanation:
Wavelength = C/f
C (Speed) of light = 3 × 10^8
f = 6.17 × 10^14
Wavelength = (3 × 10^8)/ (6.17 × 10^14)
= 4.86 × 10^-7m
The lattice structure of Lithium Fluoride (LiF) is comprised of positively charged lithium ions (Li+) and negatively charged fluoride ions (F-) that a linked together by ionic bonds.
The crystal structure of LiF corresponds to that of a face centered cubic (FCC) lattice with Li+ and F- ions occupying the lattice points in the unit cell.
You would divide 140 (How many electrons) by the numbers of lines.
