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Mademuasel [1]
3 years ago
9

The discovery of the sixth quark was accomplished by

Chemistry
1 answer:
marusya05 [52]3 years ago
8 0

Professor of Physics Carlo Rubbia


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QUICK QUESTION: On the Bohr model, how come potassium has 19 electrons in its valence shell if potassium has a K+? Isn’t it supp
Vlada [557]

Answer:  K only has 1 valence electron.  It will leave with only a little effort, leaving behind a positively charged K^+1 atom.

Explanation:  A neutral potassium atom has 19 total electrons.  But only 1 of them is in potassium's valence shell.  Valence shell means the outermost s and p orbitals.  Potasium's electron configuration is 1s^2 2s^2 2p^6 3s^2 3p^6 4s^1.  The 4s orbital is the only orbital in the 4th energy level.  So it has a valency of 1.  This means this electron will be the most likely to leave, since it is the lone electron in the oyutermost energy level (4).  When that electron leaves, the charge on the atom go up by 1.  The atom now has a full valence shell of 3s^2 3p^6, the same as argon, Ar.

4 0
2 years ago
Sodium explodes when it contacts water. If I have a compound that contains sodium, will it explode if it is exposed to water?
Vaselesa [24]

Answer:

Option D = No, when elements combine to form a new material, they have properties unique to the new materials.

Explanation:

When sodium contact with water it loses its one electron and thus gain positive charge. When there are more sodium atoms present and many atoms do this thus more positive ions are produced and these positive ions repeal each other at high speed and explosion occur.

But when it form compound with other material, it will not showed this behavior.

Example:

Consider the sodium chloride, when it dissolve in water sodium not showed explosion. In sodium chloride sodium already gives its electron to the chlorine and have stable electronic configuration. The sodium present in cationic form. When it dissolve, partial positive charge of water surrounds the Cl⁻ and partial negative charge of water surrounds the Na⁺ ion, ans sodium chloride gets dissolve into water without explosion.

6 0
3 years ago
Read 2 more answers
Explain, in terms of energy changes, why methane is used as a fuel.
Alik [6]
It puts gas in your car
4 0
2 years ago
which parts of animals are rarely preserved unburied because scavengers eat them and bacteria decompose them? hard shells soft s
katovenus [111]
Soft skulls. hope this helps
4 0
3 years ago
Read 2 more answers
Energy is the work that done by a force acting through a distance And involves motion
SIZIF [17.4K]

Answer:

true

Explanation:

energy is the energy to do things

and there is a force in our bodies wich is giving out energy through a distance

7 0
2 years ago
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