Answer:
X3Y2
Explanation:
To represent the chemical formula of the binary compound, the valencies of both elements need to be exchanged.
Valency is the combining power of elements, ions or radicals. It is the value that shows how an element tend to combine with other elements.
In this particular question, the valence of the element X is +2, this means when it enters into chemical combination, it goes in with the power of positive 2. Same goes for the element Y, when it goes into chemical combination, it is expected that it goes in with the negative power of 3.
To completely write the chemical formula of the compound formed from the combination of both, we simply exchange the valency as said above. It must be noted that while the less electronegative element carry a positive or less negative charge , the more electronegative element will carry a negative or more negative charge.
We write the less electronegative element before the more electronegative element while writing the formula of the compound
Answer:
All atoms of the same element have the same number of protons
Explanation:
All atoms of the same element have the same number of protons. The atoms are formed by protons, neutrons (both located in the nucleus) and electrons located on the outside. The number Z characterizes each element (corresponds to the number of protons located in the nucleus, which coincides with the number of electrons). The number A corresponds to the sum of protons and neutrons of an element (it varies in isotopes, since the number of neutrons varies).
This is covalent network type of solid.
For example, silicon dioxide (SiO₂) is covalent network solid with covalent bonding.
Covalent network solid is a chemical compound (or element) in which the atoms are bonded by covalent bonds in a continuous network extending throughout the material.
Silicon(IV) oxide has continuous three-dimensional network of SiO₂ units and diamond has sp3 hybridization.
This solids do not have free electrons so they are good insulators.
They have strong covalent bonds, so they melt at extremely high temperature.
Other examples are quartz, diamond, and silicon carbide.
More about network solid: brainly.com/question/15548648
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Answer:
A) The Al(s)
B) The Ni2+(aq)
C) The Cu2+
D) The Zn(s)
Explanation:
A) The Al(s) is the species that is being oxidized given that it is the one with the highest oxidation potential in the solution.
B) The Ni2+(aq) is the species that is being reduced given that it is the one with the highest reduction potential in the beaker.
C) The oxidizing agent is the substance that is being reduced or you can say the one that has the potential to oxidite other substance. In this case the agent is Cu2+ given that it reduces itself while oxidates the lead.
D) The metal added needs to have a reduction potential lower than the H+ in order to form the gas. The only listed that meets the requirement is the Zn(s).