How many valence electrons does carbon have
Answers
Answer:
Carbon has 4 valence electrons
Explanation:
The valence electrons are those found in the last energy level of the atom.
They are responsible for the interaction between atoms,
they can form bonds.
Let's see the electronic configuration of carbon.
The atomic number of C is 6 (Z=6)
To know the number of valence electrons that we have we count in the last energy level of the atom.
The last energy level of carbon is 2 and we 4 electrons is this level.
So carbon has 4 valence electrons.
Final answer:
Carbon, as an element from Group 14 of the periodic table, has four valence electrons. These electrons are the ones available for bonding and are located in its outermost shell.
Explanation:
Carbon belongs to Group 14 in the periodic table and has four valence electrons. These are the electrons that are available for bonding. Elements in Group 14 have four electrons in their outermost shell because the s and p sublevels can hold up to four electrons. For example, in the case of carbon, its electron configuration is 1s22s22p2 which clearly shows the four valence electrons in the outermost shell (the 2s and 2p orbitals).
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Related Questions
Compared with saturated hydrocarbons, an unsaturated carbon has _____ ratio of hydrogen atoms to carbon atoms.
Your teacher placed a drop of food coloring in a cup of water. the color slowly mixed into the water without being stirred. what does this tell you about water molecules?
PLEASE HELP ME WITH THESE THREE QUESTIONS!!!!!!!!!!!!Some of the newest types of modern appliances are 100% efficient and lose no energy to heat. True False A perpetual motion machine is an invention that has only worked a few times in history. True FalseThermal pollution occurs when factories use water to cool down their heated machinery, and then release the heated water into rivers and oceans. True False
What is one way to describe elements? A. They are the smallest particles of any material. B. They are the building blocks of matter. C. They are the most expensive materials on earth. D. They break down easily.
Answers
Answer:
Exa homogeneous mixtureplanation:
sulfur
anitmony
selenium
Answers
Answer: Option (a) is the correct answer.
Explanation:
Electric current is the flow of electrons and an atom that has free electrons will be able to carry current easily.
Hence, electronic configurations of the given elements are as follows.
Tin (Sn) -
Sulfur (S) -
Antimony (Sb) -
Selenium (Se) -
So, sulfur and selenium being non-metals won't be able to conduct electricity. Whereas both tin and antimony are poor metals but they are able to conduct electricity.
Antimony has half filled p-shell so, it will not lose its valence electrons as it is stable. Whereas tin will easily lose its valence electrons to become stable.
Thus, we can conclude that tin is the element that is most likely to carry electric current easily.
b. False
Answers
Answer:
Correct answer is FALSE I just tested it and it came out right.
Explanation:
b. Solutions, colloids, suspensions
c. Colloids, solutions, suspensions
d. Colloids, suspensions, solutions
e. Suspensions, colloids, solutions
Answers
Answers
Answer:
i) Highest osmotic pressure: CaCl2
ii) lower vapor pressure : CaCl2
iii) highest boiling point : CaCl2
Explanation:
The colligative properties depend upon the number of solute particles in a solution.
The following four are the colligative properties:
a) osmotic pressure : more the concentration of the solute, more the osmotic pressure
b) vapor pressure: more the concentration of the solute, lesser the vapor pressure.
c) elevation in boiling point: more the concentration of the solute, more the boiling point.
d) depression in freezing point: more the concentration of the solute, lesser the freezing point.
the number of particle produced by urea = 1
the number of particle produced by AgNO3 = 2
the number of particle produced by CaCl2 = 3
As concentrations are same, CaCl2 will have more number of solute particles and urea will have least
i) Highest osmotic pressure: CaCl2
ii) lower vapor pressure : CaCl2
iii) highest boiling point : CaCl2
Final answer:
The solution with the highest number of particles in solution (CaCl2 in this case), experiences the highest osmotic pressure, lowest vapor pressure and highest boiling point due to the principles of colligative properties.
Explanation:
The question pertains to the colligative properties of solutions, which would be governed by the number of particles in the solution. The solutions are 0.04 m urea [(NH2)2C=O)], 0.04 m AgNO3, and 0.04 m CaCl2. For (i) Highest osmotic pressure, the solution with the highest ion count would yield the highest osmotic pressure. CaCl2 dissociates into three ions (Ca²+, and 2 Cl¯), therefore, it would exhibit the highest osmotic pressure. For (ii) Lowest vapor pressure, this would coincide with the solution with the highest osmotic pressure, again making it CaCl2, due to the greatest decrease in vapor pressure. For (iii) the highest boiling point, this too would be CaCl2 for the reasons stated above. The presence of more particles in a solution interferes more with the evaporation process, requiring more energy (higher temperature) to achieve boiling.
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