Answer:
d. Metallic
c. S
Explanation:
A metallic bond is an interatomic bond in which valence electrons are constantly moving between atoms like a sea of electrons.
- The formation of this bond type is favored by a large atomic radius, low ionization energy, and a large number of electrons in the valence shell.
- The metallic bond is an attraction between the positive nuclei of all the closely packed atoms in the lattice and the electron cloud jointly formed by all the atoms losing their outermost shell electrons.
2. The bond type described in the second problem is an ionic bond. This results in the formation of crystal lattice with strong bonds.
- It occurs between metals and non-metals
- Since Nickel is a metal, sulfur is the only given non-metal that will make it form an ionic bond.
The answer would be<span>:
B</span>. <span>It is positive because the enthalpy of the products is greater than the enthalpy of the reactants.
The endothermic reaction has a positive enthalpy change because it absorbs the energy of the system. Since the product of the reaction has a greater enthalpy than the reactant, the reaction needs to take the extra energy from the system. Since the system losing energy, the surrounding temperature will drop.</span>
Answer: atomic number Z, gives the proton number of an element and it is unique for all elements ( i.e no two elements have the same atomic number or proton number) if the atom of the element is electrically neutral, the atomic number can also be the electron number
Explanation:
Explanation:
Gold conducts heat and electricity. ...
Gold is ductile: It can be drawn out into the thinnest wire. ...
Gold is highly reflective of heat and light. ...
Gold is prized for its beauty. ...
Gold is malleable, so it can be flattened into extremely thin sheets.
on the other hand Gold consist of copper
Key Properties of Copper Alloys
Excellent heat conductivity.
Excellent electrical conductivity.
Good corrosion resistance.
Good biofouling resistance.
Good machinability.
Retention of mechanical and electrical properties at cryogenic temperatures.
Non-magnetic.
so the difference is that copper is less expensive and not priced with its beauty
Soak into the ground as groundwater. This is capped infiltration.