12/30/12

An unknown element X can form a compound with the formula XF3. In which group on the periodic table would element X can be found?

1.) Group 1 2.) Group 2 3.) Group 13 4.) Group 14 This question doesn't make any sense to me :/ Can you please explain it?

12/30/12

Which substance is the best conductor?

1.) NaCl(s) 2.) NaCl(aq) 3.) H2O(s) 4.) H20(g) I honestly don't understand this question. Conductor of what?

12/29/12

Which compound has the least ionic character?

1.) KI 2.)HCl 3.) MgS 4.) NO

12/29/12

What combination of number of bonds and number of unshared pairs of electrons will result in a bent shape?

1. 4 and 0 2. 3 and 1 3. 3 and 0 4. 2 and 2

Which Lewis Dot Diagram could represent a noble gas?

1. X (Two dots at top) 2. X (Dots all around except on right, only has one instead of two) 3. X (One on the right) 4. X (Dots all around except on left, only has on instead of two)

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