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Chemical Bonds

Q. Which of the following statements is true? A.) A covalent bond has a lower potential energy than the two separate atoms B.) Single bonds are shorter than double bonds C.) A pair of electrons in a covalent bond are sometimes referred to as lone pairs D.) A covalent bond is formed through the transfer of electrons from one atom to another E.) It is not possible for two atoms to share more than two electrons

Solved • Mar 22, 2020

Chemical Bonds

Q. Watch the video to learn about the process by which covalent bonds are formed between two hydrogen atoms. In the video, you can see that when two hydrogen atoms approach one another, a covalent bond is formed due to the overlap of the 1s orbital of each hydrogen atom. the process by which a covalent bond is formed is explained with the help of the graph of potential energy versus the distance between the two atoms. Identify which of the following statements are correct. Check all that apply.

Solved • Feb 25, 2020

Chemical Bonds

Q. Use the Custom Attraction feature provided on the right of the simulation to predict changes to attractive force at different points on the curve as the atomic diameter increases. You can click the Custom Attraction radio button and set the Atom Diameter and Interaction Strength to the center using the slider bars on the right. A potential energy curve is displayed in the simulation similar to the one displayed below. The points A through E represent the position of the moving atom. Click the Total Force radio button in the "Forces" section to observe the change in forces. The change in total force is indicated by green arrows. The arrow pointing toward the atoms shows attraction, and the arrow pointing away from the atoms show repulsion. In the simulation you can move the purple dot that represents the moving atom to each of the five points ( A to E) shown on the graph. You can do this by clicking and dragging the purple dot to the respective point on the potential energy curve. Drag the purple point to any one of the five points ( A to E). Consider clicking on the pause button in the simulation to maintain the atom at the required point. Observe the length of the green arrow at this stage. Continue increasing the atomic diameter and observe the corresponding change in length of the arrow. Identify how increasing the atom diameter will impact the forces experienced by the atoms at each of the five points (A to E) shown. Drag the appropriate items to their respective bins.

Solved • Feb 25, 2020

Chemical Bonds

Q. Select the Custom Attraction feature. Expand the "Forces" tab by clicking the + symbol, then click the Total Force radio button. Move the position of the rightmost atom toward the pinned atom to see the force experienced by the atoms. You can click on the pause button at the bottom of the simulation so that the atoms remain at a constant position. When the green arrows point toward each other, this indicates that attractive forces exceed repulsive forces. When the green arrows point away from each other, this indicates that repulsive forces exceed attractive forces. When there are almost no arrows at all, this indicates that the attractive forces balance the repulsive forces and the net force is zero. According to your observations, classify the following statements based on the forces present between the atoms. Drag the appropriate items to their respective bins.

Solved • Feb 25, 2020

Chemical Bonds

Q. Two hydrogen atoms interact to form a hydrogen molecule. Classify the following statements that describe the stages of bond formation in a hydrogen molecule according to the predominant force existing between the two hydrogen atoms. Drag the appropriate items to their respective bins.

Solved • Feb 25, 2020

Chemical Bonds

Q. When two hydrogen atoms approach other to form a chemical bond, different interactions occur between the atoms. Identify the correct statements with respect to the interactions involved in the formation of chemical bond. Check all that apply.

Solved • Feb 25, 2020

Chemical Bonds

Q. Consider the following element combinations. Classify the bonds formed between each pair as ionic, polar covalent, or nonpolar covalent based solely on each element's position on the periodic table. Drag the appropriate items to their respective bins. S-Br, O-I, Na-N, P-P, Be-Cl, Cl-Cl, P-I, Sr-O

Solved • Feb 24, 2020