Which gaseous atoms are paramagnetic

Thank you! Published by Wilfrid Bradley Modified over 6 years ago. The relatively high boiling point of HF can be correctly explained by which of the following? This difference in boiling points may be attributed to a difference in a molecular mass d hydrogen bonding b density e heat of combustion c specific heat Answer: d. The intermolecular forces are stronger for NH3 than for CH4. C2H6 and C6H14 both have intermolecular attractions through london dispersion forces instantaneously induced dipoles.

The forces in C6H14 are stronger because the molecule is longer with a greater electron density and therefore more polarizable. Covalent Bonding and Naming. Types of Covalent Bonds l. Which of the following molecules has a dipole moment of zero? The electron dot structure for which of the following molecules would have two unshared pairs of electrons on the central atom? This difference in boiling points may be attributed to a difference in a molecular mass d hydrogen bonding b density e heat of combustion c specific heat Answer: d.

Which of the following would have the strongest bond? The intermolecular forces are stronger for NH3 than for CH4. It is difficult for them Appearing for exams could be stressful for students.

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By signing up, you agree to our Terms of Use and Privacy Policy. When the electrons of a solid render the substance a permanent magnet or one that can be made into such a magnet, the substance is called ferromagnetic from the Latin ferrum, meaning iron.

In addition to iron, the elements cobalt, nickel and gadolinium are ferromagnetic. Most substances, however, exhibit other responses to magnetic fields, making most atoms paramagnetic or diamagnetic. These properties can be found to different degrees in the same materials, and factors such as temperature can affect a material's response to applied magnetic fields. Consider three different friends you have chosen as candidates to test your new science gaming app.

One of them only responds to your urges to give it a try by becoming more resistant than she was to game-playing at the outset. The second agrees to install the app and play, but quickly stops playing and uninstalls the app every time you leave him alone, only to reinstall it and keep playing whenever you reappear; and the third friend immediately becomes hooked on the app and never stops using it. This is loosely how the three kinds of magnetism you are most likely to hear about at the office party work in relation to each other.

While ferromagnetism, already described, is a state of permanent magnetism, how does this happen, and what are the alternatives? As it happens, there are four well-understood alternatives to ferromagnetism. Paramagnetism, again, is the property of being attracted to a magnetic field, and applies to a wide range of metals, including most modern refrigerators. Diamagnetism is the opposite, a tendency to be repelled by a magnetic field.

All materials exhibit some degree of diamagnetism. In both cases, critically, the material returns to its previous state when the field is removed.