Quantcast Formation of Molecules - Fundamentals of X-Ray Physics

Share on Google+Share on FacebookShare on LinkedInShare on TwitterShare on DiggShare on Stumble Upon
Custom Search
 
  
 
Figure 1-6. Atoms with 1 valence.
1-14. FORMATION OF MOLECULES
Molecules are formed of two or more atoms. Sharing of the outer valence
electrons often occurs among atoms during molecule formation. This sharing is
cemented by three kinds of bonds: the ionic or chemical bond, the convalent bond, and
he hydrogen.
a. Ionic Bond. An ionic bond is formed with the direct transfer of an orbital
electron from one atom to another in an electrostatic attraction. This type of valence,
call ionic polar valence, is common to the formation of many inorganic compounds. For
example, when a sodium atom and a chlorine atom are brought together, the single-
valence electron in the outer shell of the sodium atom is transferred to the chlorine atom
which has a "hole" in its outer shell and sodium chloride is formed (figure 1-7).
Figure 1-7. Ionic bond sodium chloride.
MD0950
1-13



Medical News
Consolidating consciousness: Memory permanence may be mediated by neural rehearsal following learning
The permanence of memories has long thought to be mediated...
medicalxpress.com
“Benign masochism” motivates common strange behaviors
I can recall many times I’ve offered something to a...
scopeblog.stanford.edu
Key protein drives 'power plants' that fuel cells in heart and other key body systems
Case Western Reserve University scientists have discovered that a protein...
medicalxpress.com
Half of Hospitals Incur Medicare Readmission Penalties
(MedPage Today) -- Nearly 2,600 hospitals will incur a combined...
medpagetoday.com
Cardio Deaths Are Short Term Risk Post Testicular Cancer Tx (CME/CE)
(MedPage Today) -- Chemotherapy drives excess 12-month mortality...
medpagetoday.com
A Little Exercise Goes a Long Way for Older Adults (CME/CE)
(MedPage Today) -- 15 minutes a day may be enough...
medpagetoday.com
Advocates Say Mental Health ?Parity? Law Not Fulfilling Its Promise
(MedPage Today) -- Insurers are subtly subverting the law, supporters...
medpagetoday.com
USPSTF finds evidence lacking for autism screening in children
(HealthDay)—The U.S. Preventive Services Task Force (USPSTF) has concluded that...
medicalxpress.com
Team advances therapy preventing addiction relapse by erasing drug-associated memories
Recovering addicts often grapple with the ghosts of their addiction—memories...
medicalxpress.com
Rethinking middle and high-school success: strategies for creating healthier students
My daughters are still years away from college or even...
scopeblog.stanford.edu
Sublingual immunotherapy linked to clinical benefits in HIV
(HealthDay)—For grass pollen-allergic HIV-positive patients treated with highly-active antiretroviral therapy...
medicalxpress.com
Stroke Rounds: Triple Tx Offers No Benefit for Secondary Prevention
(MedPage Today) -- Three antiplatelets don't improve outcomes and may...
medpagetoday.com
EU regulators clear Pfizer's purchase of Hospira
European Union regulators on Tuesday approved Pfizer's $15.23 billion purchase...
medicalxpress.com
Liquid nicotine from e-cigs poses poison danger to children
(HealthDay)—The increasing popularity of electronic cigarettes has led to a...
medicalxpress.com
Projected benefits of high BP treatment in China
An expanded program of treatment for hypertension could prevent about...
medicalxpress.com
Chloride levels linked to mortality in heart failure
(HealthDay)—Serum chloride levels at admission are associated with mortality among...
medicalxpress.com
ASCO Forms New Unit to Strengthen Oncology Practices
(MedPage Today) -- Stephen Grubbs, with decades of experience, to...
medpagetoday.com
Novel pharmacological activity for R-ketorolac in ovarian cancer
(HealthDay)—The R-enantiomer of ketorolac is enriched in peritoneal fluids and...
medicalxpress.com
More evidence that kids of gay parents do just fine
(HealthDay)—On the heels of the U.S. Supreme Court ruling that...
medicalxpress.com
Parents' preconception exposure to environmental stressors can disrupt early development
Even before a child is conceived, the parents' exposure to...
medicalxpress.com
 


Privacy Statement - Copyright Information. - Contact Us

Integrated Publishing, Inc.
9438 US Hwy 19N #311 Port Richey, FL 34668

Phone For Parts Inquiries: (727) 755-3260
Google +