ionic bond:
Bond formed when an atom donates its electron and other atom receives those electrons.
polar covalent:
Bond formed by equal sharing of electrons between both the atoms and there is an electronegativity difference between the two atoms.
Nonpolar covalent:
Bond formed by equal sharing of electrons between both the atoms and there is no electronegativity difference between the two atoms.
Metallic:
Formed between two metals.
So the bond between :
Phosphorus and chlorine-polar covalent bond as it is formed by equal sharing of electrons between both the atoms and there is an electronegativity difference between the two atoms.
Potassium and oxygen -ionic bond as here potassium donates its electron and oxygen receives those electrons
Fluorine and fluorine -Non polar covalent bond as formed by equal sharing of electrons between both the atoms and there is no electronegativity difference between the two atoms.
Copper and aluminum-metallic bond as Formed between two metals.
Carbon and fluorine -polar covalent bond as it is formed by equal sharing of electrons between both the atoms and there is an electronegativity difference between the two atoms.
Carbon and hydrogen --Non polar covalent bond as formed by equal sharing of electrons between both the atoms and there is no electronegativity difference between the two atoms.
Aluminum and oxygen--ionic bond as here aluminum donates its electron and oxygen receives those electrons
Silver and copper --metallic bond as Formed between two metals.
Answer:
The answer to your question is below
Explanation:
1. Found in period 2. All the elements in the list are found in period 2.
a. F This option is correct
b. Be Beryllium is located in period two.
c. O also oxygen is found in period 2.
d. C Carbon is found in period 2.
2.- Can gain lose 4 electrons to become its nearest stable noble gas. Only Carbon.
a. F This option is wrong, F becomes stable when it gains 1 electron.
b. Be Beryllium becomes stable when it loses 2 electrons.
c. O Become stable when it gains 2 electrons.
<u>d. C </u><u>Become stable when it gains or loses 4 electrons.</u>
The gravitation field strength of Planet X is 10 times that of Earth's, as the object weight has increased 10 times. This is only possible if the planet is more massive or more dense (smaller diameter).
Therefore, the answer is C.
The composition in mol% of the elements are :
- 4.91% of Al₂O₃ in alloy
- 95.08% of Cu in alloy
<u>Given data : </u>
Weight percentage of copper alloy = 7.7 wt %
Assume weight of alloy = 100 grams
<h3>Applying the weight percentage </h3>
mass of Al₂O₃ in alloy = 7.7 gm
Mass of Cu in alloy = 100 - 7.7 = 92.3 gm
<u />
<u>First step : calculate the mole of elements</u>
i) moles of Al₂O₃ in alloy
= mass of Al₂O₃ in alloy / Atomic mass of Al₂O₃
= 7.7 gm / 102 gm/mol
= 0.075 mol
ii) moles of Cu in alloy
= mass of Cu in alloy / Atomic mass of Cu
= 92.3 gm / 63.5 gm/mol
= 1.45 mol
Therefore the total number of moles in the alloy = 0.075 + 1.45 = 1.525
<u>Next step : Determine the mole </u><u>percentages </u>
i) Mole percentage of Al₂O₃ in alloy
= ( 0.075 ) / 1.525 * 100
= 4.91%
ii) Mole percentage of Cu in alloy
= ( 1.45 ) / 1.525 * 100
= 95.08%
<u />
Hence we can conclude that The composition in mol% of the elements are : 4.91% of Al₂O₃ in alloy and 95.08% of Cu in alloy.
Learn more about alloys : brainly.com/question/716507
