Answer:
Energy modelling can be described as a system to make simulations or computerized models of systems which use energy. This makes it easier to analyze and access such systems which use energy. By this approach, there are lesser chances for the energy to be wasted and fewer chances for any energy-related experiments to go wrong. As such kind of experiments can be dangerous hence it is essential that models be made first.
Answer:
Berlian, grafit dan fullerenes.
Penjelasan:
Tiga bentuk atom karbon adalah berlian, grafit dan fullerenes. Ketiga-tiga atom karbon ini adalah bentuk atom karbon allotrophic. Perbezaan utama antara atom karbon adalah berikut:
Ketiga-tiga bentuk allotrophic mempunyai sifat kimia yang sama tetapi sifat fizikalnya berbeza antara satu sama lain. Berlian adalah yang paling sukar sementara grafit lembut. Dalam berlian, satu atom karbon berkongsi elektron dengan empat atom karbon yang lain sementara dalam grafit, satu atom karbon berkongsi elektron dengan tiga atom karbon dan fulleren adalah atom di mana satu atom karbon dihubungkan dengan beberapa atom karbon melalui ikatan kovalen. Ketiga-tiga atom karbon padat pada suhu bilik.
<u>Answer: </u>The correct answer is Option B.
<u>Explanation:</u>
The given elements that is sodium and sulfur are the elements which belong to the same period that is third period.
As, the electrons are added up to the same shell across a period, the number of protons also increase and hence, they attract the electrons more effectively. This means that the effective nuclear charge also increases and the size of the sulfur thus shrink and hence, the size (atomic radius) of sodium is the largest amongst third period.
Therefore, the correct answer is Option B.
Answer:
Aldehydes are typically more reactive than ketones due to the following factors. ... The carbonyl carbon in aldehydes generally has more partial positive charge than in ketones due to the electron-donating nature of alkyl groups. Aldehydes only have one e- donor group while ketones have two.
Explanation:
