Ch 11 Test Review - Mr. Hudspeth

Which of the following elements would have a lewis dot structure most similar to Nitrogen?

• Boron

• Phosphorus

• Sodium

• Oxygen

Answer explanation

Phosphorus and Nitrogen BOTH have 5 valence electrons

How many electrons are shared in a TRIPLE bond?

• 3

• 2

• 4

• 6

Answer explanation

Each bond requires two electrons to be shared. A triple bond has three bonds. 3 x 2 = 6 total electrons

Draw the lewis structure for an Oxygen molecule.

If you add a lone pair to the central atom of a trigonal planar molecule, what shape is formed?

• Trigonal Pyramidal

• Bent

• Tetrahedral

• Linear

Which element is the MOST electronegative?

• Hydrogen

• Helium

• Fluorine

• Francium

Which element is the LEAST electronegative?

• Helium

• Hydrogen

• Flourine

• Francium

Is this molecule polar, nonpolar, or ionic?

• Polar

• Nonpolar

• Ionic

• IDK

Is this molecule polar, nonpolar, or ionic?

• Polar

• Nonpolar

• Ionic

• IDK

Why is hydrogen so electronegative compared to the other elements in its group?

(a)   bonds SHARE electrons EVENLY