Search found 8 matches

by Jynelle Brillantes 1E
Sun Jul 09, 2017 11:30 pm
Forum: Trends in The Periodic Table
Topic: Electron Affinity of Beryllium & Magnesium
Replies: 1
Views: 1186

Electron Affinity of Beryllium & Magnesium

Why are the electron affinity values for beryllium (Be) and magnesium (Mg) 0?
by Jynelle Brillantes 1E
Sun Jul 09, 2017 11:05 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Exercise 2.51
Replies: 1
Views: 302

Re: Exercise 2.51

I had a bit of trouble figuring out the electron configuration for tantalum (Ta), so I had to look it up and it is [Xe] 4f145d36s2

The d-subshell isn't filled entirely, and there's an odd number of electrons present (3). That is why 3 unpaired electrons are predicted. Hope this helps
by Jynelle Brillantes 1E
Sun Jul 09, 2017 10:32 pm
Forum: Trends in The Periodic Table
Topic: Electron Affinity Trend
Replies: 3
Views: 386

Re: Electron Affinity Trend

504754253 wrote:more gaseous elements are on the right side of the periodic table and they are more reactive. Hope this helps!


If they are more reactive, does this mean they release more or less energy when an electron is added?
by Jynelle Brillantes 1E
Sun Jul 09, 2017 10:13 pm
Forum: Trends in The Periodic Table
Topic: Electron Affinity Trend
Replies: 3
Views: 386

Electron Affinity Trend

In the course reader it says there is “generally high electron affinity for elements in the top right of the periodic table.” What does this mean?
by Jynelle Brillantes 1E
Sun Jul 02, 2017 11:20 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Atomic Spectra & Energy Levels
Replies: 2
Views: 368

Atomic Spectra & Energy Levels

Can someone please explain the following:

As

This was noted in class on Friday (6/30) with regard to changes in energy levels, and some clarification would be greatly appreciated!
by Jynelle Brillantes 1E
Sun Jul 02, 2017 10:55 pm
Forum: Properties of Electrons
Topic: Wave Properties of Electrons
Replies: 1
Views: 225

Wave Properties of Electrons

I remember Dr. Lavelle going over the Dual Slit Experiment during lecture on Friday (6/30).

Will we ever be asked on a test to explain/describe the details of that experiment, or is it more important to remember the results and their significance?
by Jynelle Brillantes 1E
Sun Jul 02, 2017 10:33 pm
Forum: Limiting Reactant Calculations
Topic: Reactant vs. Reagent [ENDORSED]
Replies: 23
Views: 9418

Reactant vs. Reagent [ENDORSED]

I’ve noticed both of these terms, on separate occasions, used in limiting reactant problems.

Are they used interchangeably, or is there an important distinction between the two that I should know?
by Jynelle Brillantes 1E
Fri Jun 30, 2017 9:30 pm
Forum: Empirical & Molecular Formulas
Topic: Whole Number Coefficients
Replies: 5
Views: 456

Whole Number Coefficients

When writing empirical formulas, is there a trick to knowing what to multiply your decimals by in order to get whole numbers, or do I have to guess and check? For example, I got coefficients of 1, 1, and 2.381 in a problem I was working through. What should I multiply 2.381 by in order to get a whol...

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