<h3><u>Answer</u>;</h3>
Hydrogen's valence shell can hold only up to two electrons.
<h3><u>Explanation</u>;</h3>
- <em><u>Covalent bonds are types of bonds that are formed between non-metals as a result of sharing electrons between atoms. Atoms will covalently bond with other atoms in order to gain more stability, which is gained by forming a full electron shell. </u></em>
- By sharing their outer most electrons, atoms can fill up their outer electron shell and gain stability.
- <em><u>According to octet rule, When atoms react, they tend to achieve an outer shell having eight electrons. This is not the case for hydrogen as it obtains a stable valence shell configuration by sharing a single pair of electrons with another atom. </u></em>
Answer: The concentration of solutes is the same both inside and outside of the cell : isotonic
The concentration of solutes is less outside the cell than inside the cell : hypotonic
the concentration of solutes is greater outside the cell than inside it: hypertonic
the diffusion of water across a selectively permeable membrane: osmosis
the movement of molecules from a region of high concentration to a region of low concentration by means of random molecular motion : diffusion
a membrane that allows only specific molecules to move into or out of the cell : selectively permeable
Explanation:
The solutions having same osmotic pressure and hence same molar concentration are termed as isotonic.
If a solution is of lower osmotic pressure it is called as hypotonic with respect to the concentrate solution.
The more concentrated solution is said to be hypertonic with respect to the dilute solution.
Osmosis is defined as the process in which molecules of a solvent tend to move through a semipermeable membrane from a region of low concentration solution to a region of more concentrated solution.
Diffusion can be defined as a phenomenon that occurs in liquid or gases which is the process of movement of solute particles from area of high concentration to low concentration.
Selectively permeable membrane is a membrane which allows selective movement of molecules.
Element Symbol # of Atoms
Iron Fe 2
Oxygen O 12
Sulfur S 3
Hope this Helps!
Gravitational force is much weaker, because it is the force of gravity, or the force that makes smaller objects be pulled towards a much bigger one with a certain amount of force.
Now strong nuclear force, which is very strong, keeps the atomic particles in an atom from separating, and the reason it is so powerful is because the particles in an atom repel each other and this force keeps them from doing .that
