Chemistry College Essay

College
Essay
Miscellaneous
Pages 6 (1506 words)
Download 0
Visible parts of electromagnetic spectrum are capable of effecting electrons from the surfaces of metals. (Photoelectric emissions). The electrons emitted are called photoelectrons- energy required to just eject an electron from the surface of a neutral material without setting that electron in motion is called work function…

Introduction

The electrons have moved from lower energy level to higher energy level.
4. Pure hydrogen peroxide (H2O2) is a bit thick in consistency and its boiling point is 1520C. The atoms in hydrogen peroxide are in the order HOOH in terms of intermolecular forces, why does hydrogen peroxide have different physical properties than water
For Hcl, the chlorine gas alone has a boiling point of -350C. Therefore chlorine has a higher boiling point than fluorine, which is of the same group because of increase in size of molecule in chlorine.
When chlorine reacts with hydrogen to from Hcl, a covalent bond is created. This bond is stronger than the forces of attraction between molecules and therefore require more energy to break hence higher boiling point.
It should be noted that these are gases and gases have low boiling point. Hcl can form Hcl acid, which is a liquid with high boiling point. Therefore Hcl is has the highest boiling point followed by Argon and F2 has the lowest.
They all have eight electrons in their outermost energy level (full) hence have negligible tendency to gain or lose electrons. Therefore stable and non-reactive. Atomic radius increases down the group due to increase in number of energy levels. And weak forces of attraction between atoms.
As the atomic size increase down the group there is increase in strength of attrac ...
Download paper
Not exactly what you need?

Related papers

Organic Chemistry Essay
The ozonolysis products indicate that C10H14 has two methyl groups and one CH2= group, which form part of the two substituents. With one carbon-carbon double bond outside the six-membered ring, it is safe to assume that the ring is not a phenyl group.…
Chemistry.
Some toxins, such as mercury, persist in the environment and accumulate. Humans or animals often absorb them when they eat fish.…
College education and its role in life
Throughout my student and personal life, I have approached all projects and plans with passion, and I believe it is this passion that has allowed me to enjoy what I do and subsequently to do them well. Entering college, I will continue to pursue my passion for graphic designing, and I have no doubt that the proper academic guidance from an established institution will steer me towards a fulfilling…
chemistry chemistry
(Frederick, 1979, P.67) Intramolecular forces are much stronger than intermolecular forces hence the generally higher Melting and Boiling points associated with substances that have intramolecular forces. Aluminium, being a metal would be expected to form an ionic bond with Chlorine, which is a gaseous non-metal. This is not the case however due to the very small size of the Aluminium atom, which…
Chemistry College Essay
The electrons have moved from lower energy level to higher energy level.…
chemistry
Aluminium is metal with atomic number 13 and it will combine by loosing two electrons. Beryllium and aluminium are metals and will combine with other elements by loosing electrons while oxygen will combine by gaining electrons, therefore our empirical formula will have the following formula:…
Chemistry Essay
The device is essentially composed of a 'light sponge' of nanoparticles. The dye-sensitized property means that the titanium has a monolayer of absorbed dye which increases the likelihood of photon capture (Tulloch, 2004).…