1. Who is the father of atomic theory?
Dalton
2. Who discovered the electron?
<span>Thomson
</span>
3. Who expressed particles by wave equations?
<span>Schrödinger
</span>
4. Who researched on radioactivity?
Curie
<span>5. Who discovered the "open spaces" model?
</span><span>Rutherford
</span>
6. Who applied quantum theory to atoms?
<span>Bohr</span>
5 meters = 0.005 km
3 grams = 3,000 milligrams
7 meters = 700 centimeters
Im not sure about #4
2.5 meters = 2,500 mm
77 meters # 770 Dec I meters
0.002 cm = 0.02 mm
44 mm = 0.044 meters
Answer:
A carbon skeleton is the chain of carbon atoms that forms the “backbone,” or foundation, of any organic molecule. Because of carbon's unique ability to form large, diverse and stable compounds, life would not be possible without carbon.
The statement is true. The octet rule refers to the general rule of thumb wherein atoms of main-group elements tend to bond with other atoms in such a way that each atom possesses eight electrons (octet) in their valence shell. They tend to form the same electronic configuration as the noble gases. However, there are some exceptions to this rule. One of which is silane, SiH₄. A hydrogen atom only has 1 valence electron and needs another electron to complete its energy level. This is unlike other atoms, for example, carbon which has 4 valence electrons and needs to form 4 covalent bonds to fill its energy levels. Thus, 4 hydrogen atoms need only 4 more electrons. This is given by the silicon atom which has 4 valence electrons. Therefore, when a silicon atom is bonded to 4 hydrogen atoms, the resulting molecule, SiH₄, is a stable one.
