Answer:
True
Explanation:
I did the test and got 100
Phosgene on reacting with <span>phenylmagnesium bromide generates
benzoyl chloride.
Since, </span>phenylmagnesium bromide is added in excess. It would further react with benzoyl chloride to form
benzophenone.
Benzophenone on further reacting with phenylmagnesium bromide, and aqueous treatment, gives
triphenylmethanol.
Entire reaction pathways is shown below:
Answer:
decrease
Explanation:
Atomic radius
:
It is the distance from the center of nucleus to the outer most electronic shell.
Trend along period:
As we move from left to right across the periodic table the number of valance electrons in an atom increase. The atomic size tend to decrease in same period of periodic table because the electrons are added with in the same shell. When the electron are added, at the same time protons are also added in the nucleus. The positive charge is going to increase and this charge is greater in effect than the charge of electrons. This effect lead to the greater nuclear attraction. The electrons are pull towards the nucleus and valance shell get closer to the nucleus. As a result of this greater nuclear attraction atomic radius decreases and ionization energy increases because it is very difficult to remove the electron from atom and more energy is required
Answer:
4
Explanation:
Avogadro’s number represent the number of the constituent particles which are present in one mole of the substance. It is named after scientist Amedeo Avogadro and is denoted by
.
Also, it is the number of particles in exactly 12.000 g of isotope carbon 12.
Avogadro constant:-
Hence,
Mass of
= 131.293+ n18.998 g
So,
molecules have a mass of 131.293+ n18.998 g
Also,
molecules have a mass of
g
So,
molecules have a mass of
g
Also, given mass = 0.172 g
Thus,
![\frac{(131.293+ n18.998)}{6.023\times 10^{23}}\times 5.0\times 10^{20}=0.172](https://tex.z-dn.net/?f=%5Cfrac%7B%28131.293%2B%20n18.998%29%7D%7B6.023%5Ctimes%2010%5E%7B23%7D%7D%5Ctimes%205.0%5Ctimes%2010%5E%7B20%7D%3D0.172)
![\frac{18.998n+131.293}{1204.6}=0.172](https://tex.z-dn.net/?f=%5Cfrac%7B18.998n%2B131.293%7D%7B1204.6%7D%3D0.172)
![18.998n+131.293=207.1912](https://tex.z-dn.net/?f=18.998n%2B131.293%3D207.1912)
![n=\frac{75.8982}{18.998}=4](https://tex.z-dn.net/?f=n%3D%5Cfrac%7B75.8982%7D%7B18.998%7D%3D4)
<u>Thus, value of n is 4.</u>