Answer:
first choice
Explanation:
energy is written on the left side is its absorbed
2 elements came together so bonds are formed.
Answer:
The correct Option is C (It is polar, because the bond polarities add together in a bent molecule.)
Explanation:
The molecular structure of Hydrogen Sulfide (H₂S) is attached below;
The molecule of Hydrogen Sulfide is polar due to following two reasons;
1) Electronegativity Difference:
Sulfur has an electronegativity of 2.58 while that of Hydrogen is 2.20. Hence, sulfur being more electronegative attracts the electron fro hydrogen making it slightly partial positive and increasing electron density and becoming slightly partially positive. So, we can call this bond as slightly polar bond.
2) Dipole Moment:
Dipole moment occurs when the bond is polar. Being a vector quantity it strongly depends upon the geometry of a molecule. In H₂S the two polar bonds cannot cancel each other because they are not in opposite direction as that found in case of CO₂. Hence, H₂S is a polar compound.
Answer:
D
Explanation:
Molecules at higher temperatures have more energy and can vibrate faster and allow sound waves to travel more quickly.
Answer:
98
Explanation:
The first 98 elements occur naturally, although 10 of them are found in extremely small amounts.
The elements from Element 99 up are so unstable that they must be produced artificially.