When a nonmetal forms an ion, will the charge on the ion be positive or negative?

Refer to the structural formula given below:  Phosphorus has an electronegativity value of 2.1 and chlorine has an electronegativity value of 3.0. Which atom, phosphorus or chlorine would be labeled partially negative, ()?

If the structure of a molecule is asymmetric (i.e. not symmetric), is the overall molecule polar or nonpolar?

On a separate sheet of paper, draw the Lewis dot structure for PBr3.  After completing the exam, upload your picture in the Unit 2 Exam pictures dropbox. 

When a nonmetal forms an ion, will the charge on the ion be positive or negative?

Balance the equation below by placing the correct coefficients in the blanks. Your response should list the coefficients in order from left to right, separated only by commas; no spaces. If no coefficient belongs in a blank, represent it with a “1”. For example the equation 2 H2O →  2 H2+O2 would be represented as 2,2,1. ____Cr + ____H2(SO4)  →  ____H2  +   ____Cr2(SO4)3  

An elderly lady comes to the clinic complaining of having difficulty when she tries to do her needlework. She walks straight, although somewhat slowly, and no rigidity is noted on movement. She states the shaking in her hands stops when she holds her hands in her lap. The nurse practitioner makes a tentative diagnosis of:

You have a 22 year old female patient with a two year history of recurrent, unilateral, pulsating headaches with vomiting and photophobia. The headaches, which generally last 3 hours can be aborted by resting in a dark room. Her physical examination is unremarkable. This representation is most consistent with:

Identify the highlighted region:

An elderly lady comes to the clinic complaining of having difficulty when she tries to do her needlework. She walks straight, although somewhat slowly, and no rigidity is noted on movement. She states the shaking in her hands stops when she holds her hands in her lap. The nurse practitioner makes a tentative diagnosis of: