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Which molecules are compounds?
Molecules are the combination of two or more atoms which may exist free in gaseous form or in solutions, the ionic compounds are not the molecular compounds because their one unit can not exists freely but as the crystal lattice.
Why are most solid nonmetals brittle?
The difference in properties between metal and nonmetal solids (i.e. brittleness, malleability, conduction of both heat and electrical current) is due to availability or absence of free electrons. Contrarily to abundance of free electrons in metals, free electrons are much fewer in nonmetal objects. Electrons that are not bound to atoms are free to roam about, and that is what free electrons do (everywhere) in a piece of metal. These electrons would take impact energy and (practically instantly) distribute it throughout the piece, acting like a bumper in a car. It helps to remember that things are mostly empty space as that is how atoms are. Atomic properties explain also the difference in heat transfer: metals feel cold on a touch because free electrons immediately take energy from a tip of a finger and 'run away with it.' (We feel something is colder when we give out energy, instead of receiving it.) E.Silvermint
Why do farmers in the Great Plains grow corn instead of coffee?
Climate. Coffee plants need a much different climate, as well as a lot more hand labor.
How can you represent atoms?
First you start of by finding out what the atomic number is of the element, in this case the number is 17. You then draw a circle, you are aloud to put 2 electrons on this circle. you then draw another cirlce around it, you are aloud to have 8 electrons on the outer shells. you will ned a third circle to put the rest of the elcetrons on to it. in total you should have the smallest circle with 2 electrons, the middle circle with 8 and then the outer shell with 7 elecrons on it. you can draw the electrons as dots or crosses on the cirlce line. because the outer shell is not full and only has 7 electrons instead of 8, this means it will be reactive. if an element has a full outer shell then it becomes unreactive. hope that helped. :)
What does borh model represent?
Bohr's models represent the structure of the atom, as he idealized. In the middle we would have a circle representing the positively charged nucleus. Then, circling around the nucleus in specific orbits we would have the negatively charged electrons, like the planets circling around the sun, but with electromagnetic forces instead of gravitational.
Why carbon does not form ionic compounds?
Carbon does not readily form ionic compounds because it has a high ionization energy, meaning it requires a large amount of energy to remove electrons and form a stable cation. Instead, carbon tends to form covalent compounds by sharing electrons with other atoms to achieve a full outer shell configuration.
What are binary covalent compounds?
Binary covalent compounds are compounds composed of two nonmetal atoms that share electrons to form covalent bonds. This means that the atoms in these compounds do not transfer electrons but instead each atom contributes to the bonding by sharing electrons. Examples include carbon dioxide (CO2) and water (H2O).
It is true for all compounds Composition of ionic compounds Which is NOT true of compounds Which is?
The statement that all compounds have a composition of ionic compounds is false. Many compounds can be covalent in nature, where atoms share electrons instead of transferring them. On the other hand, it is true that compounds have a definite composition with fixed ratios of elements and compounds are formed by the bonding of two or more different elements.
How would the variety of organic compounds be different if carbon had seven electrons in its outmost energy level instead of four?
i dont now i just ask you if you now this is came to my test and i want to make sure
Is Xe covalent or ionic?
Xenon (Xe) typically forms covalent bonds. It is a noble gas and tends not to gain or lose electrons to form ions like ionic compounds do. Instead, it shares electrons with other nonmetals to form covalent compounds.
Do binary ionic compounds have bonds that share two valence electrons?
No, binary ionic compounds do not have covalent bonds where electrons are shared. Instead, they have ionic bonds where electrons are transferred from one atom to another. This results in the formation of positively charged cations and negatively charged anions that are attracted to each other due to their opposite charges.
Can all elements form compounds?
Compounds are combinations of elements. They are different from molecules in the fact that Compounds cannot be a combination of the same element ( O2 ) instead compounds are combinations of different elements ( CO2 )
What are some compounds of minerals that occur as elements instead of compounds?
Copper, Silver, and Gold occur as elements instead of compounds.
How many electrons are required to reach an octet in Be?
An octet is 8 electrons- but even 2 electrons are okay for achieving stability. A beryllium atom has 2 shells, with 2 electrons in each shell. Since it is a metal, it will lose electrons instead of gaining them, forming a positively charged ion. This means that it will lose both the electrons in its outermost shell, leaving it with a single shell containing 2 electrons. So, basically beryllium loses 2 to electrons to form a stable duet with a charge of 2+! Hope this helped you (:
Do aromatic compounds undergo additon reactions?
Aromatic compounds typically do not undergo addition reactions. Their stability is due to the delocalized pi-electrons in the aromatic ring, making them less reactive towards addition reactions. Instead, aromatic compounds often undergo substitution reactions.
What are some examples of minerals that are elements instead of compounds?
Copper, Silver, and Gold occur as elements instead of compounds.
Does silicon form an ion?
No, silicon generally does not form ions because it tends to share electrons in covalent bonds rather than giving up or accepting them to form ions. Silicon typically forms covalent compounds instead of ionic compounds.
