1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
nika2105 [10]
3 years ago
6

True or false the si in sih4 does not follow the octet rule because hydrogen is in an unusual oxidation stat

Chemistry
1 answer:
ExtremeBDS [4]3 years ago
6 0
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.
You might be interested in
Entropy of a system decreases with decrease in Temperature T/F
Svet_ta [14]

Answer: The given statement is true.

Explanation:

Entropy means the measure of randomness present in a substance. That is, an increase in temperature will lead cause more motion in the particles of a substance more will be their kinetic energy.

As a result, there will occur more collisions due to which randomness of molecules will increase. Hence, there will be increase in entropy.

So, when we decrease the temperature then there will be decrease in motion of particles. As a result, lesser number of collisions will take place between them. Hence, degree of randomness will also decrease.

Thus, we can conclude the statement entropy of a system decreases with decrease in temperature, is true.

3 0
3 years ago
2.15 Liters of helium gas at a pressure of 58 kPa and a temperature of 25 degrees celsius, what is the new volume at stp?
Nastasia [14]
The ideal gas law is P1V1/T1 = P2V2/T2. STP means the temperature is 273 K and pressure is 101.3 kPa. According to this formula, the new volume V2=2.15*58*273/(298*101.3) = 1.13 L.
5 0
3 years ago
Помогите пожалуйста или с первым вопросом или со вторым. Буду очень благодарна, т.к. это мой зачет... :С
Bess [88]
Hsiaqoanwbwiso iDisks
5 0
3 years ago
The only part of Earth's inner structure that is a liquid is the _____. A. inner core B. lower mantle C. outer core D. crust
slavikrds [6]

Answer:

lower mantle

Explanation:

because the core and the crust are solid.

8 0
3 years ago
Read 2 more answers
PLEASE HURRY!! WILL GIVE BRAINLIEST!!!!
Snowcat [4.5K]

Answer:

a

Explanation:

8 0
2 years ago
Other questions:
  • R-12 should be recycled instead of vented to the atmosphere because
    14·2 answers
  • What is the mass in milligrams of 4.30 moles of sodium?use âeâ for âÃ10" and use significant figures?
    5·1 answer
  • In a laboratory experiment, john uses a message to seperate soil particles from water . Which technique separation which techniq
    11·1 answer
  • PLZ HELP PLZ HELP I AM IN NEED WHOEVER GETS CORRECT ANSWER GETS 30 POINTS NO WRONG ANSWERS PLZ
    10·2 answers
  • Given the following balanced equation determine the amount of MgCl2 that can be produced from 65.0 grams of Mg. Mg + HCl -->
    12·1 answer
  • How many electrons are able to fit on the first energy level.​
    15·1 answer
  • In a convection current, what causes the molten rock to move from the bottom of the mantle to the top of the mantle?
    15·1 answer
  • What are diatomic molecules and are they compounds? PLEASE ANSWER ASAP!!
    14·1 answer
  • Which of these is not a property of minerals?
    5·1 answer
  • BRAINLIEST TO FIRST RIGHT ANSWER
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!