1.      How many electrons are in a triple bond? 2.      All elements want to reach octet, which means they want valence electrons to be stable except for hydrogen, helium, phosphorous, sulfur, boron and beryllium.

3.      Draw the electron configuration and write the ion that has 7 electrons.

4.      Answer the following questions using the compound CN-.

a.      Calculate the total number of valence electrons.

b.      Draw the Lewis structure.

c.      Determine the bond angle.

d.      Determine the molecular geometry (shape).

5.      Why does an element gain or lose electrons?

6.      What is a cation and an anion? State the charges that the cation and anion would have.

7.      If an ion has a -3 charge this means that the atom 3 electrons.

8.      Explain why a Cl- atom is bigger in size than a Cl atom?

9.      What type of bond does a dipole moment occur in and why? Then draw the dipole moment in HF (include the partial charges and arrow).

10.  What type of bond is in KBr based on the type of elements. Explain your answer. Then explain if the electrons are shared or transferred.

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Which equation represents a fission reaction? o "9n+h—150 o 235u + n—190cs + rb+25 o be + he—1c + in o 28 np —> 2390 pute

Straightforward questions answered in the powerpoint slidesreaction: heating the starting materials under refluxwhat does it mean to heat under reflux? why do we choose water as the reflux solvent? what are boiling chips used for? why do we put a condenser on top of the reaction? why do we add heat and let the reaction stir for 30 minutes? why do we add sulfuric acid to the reaction after it cools as opposed to when it’s still hot? separation: filtration of precipitatewhy don’t we do an aqueous and organic extraction in the separatory funnel? why do you rinse the salicylic acid on the filter with ice cold water? purification: recrystallization of salicylic acid (no hot filtration needed)what is the difference in the amount of room temperature water vs. boiling water needed to dissolve the salicylic acid (assume a 1.2 gram yield of salicylic acid)? remember, in the lab if you need x ml of boiling water to dissolve a solid, then you should add a little more (definitely no more than 1.5 times the theoretical amount) to ensure it doesn’t recrystallize prematurely.analysis: melting point of salicylic acidwhat can you conclude if the melting point of the salicylic acid you just synthesized is 152-155oc and the 1: 1 mix of your product and “synthetic” salicylic acid is 151-154oc?

What is a for cio3-, the chlorate ion?