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The attraction of the nucleus for the outer electrons in large atoms is lessened as a result of?
Wiki User
∙ 14y ago
Its all called electron shielding.
Wiki User
∙ 11y ago
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What causes an electron to jump from Atom to atom?
An electromagnetic force attraction between opposite charges pulls atoms together, either between electrons and nuclei, or as the result of a dipole attraction.
What are the most active metals in group 1A increases?
The reactivity of the alkali metals increases as you go down column 1 (or 1A) in a periodic table. This occurs because the first ionization energy of the metals decreases, as a result of "shielding" the outermost electrons from the attraction of the positive nucleus by the inner electrons.
Do electrons orbit around the nucleus because there is an electrical charge between electrons and protons?
This is essentially correct. The electrons and protons have equal but opposite charges, and the fundamental law of electrostatics is that opposite charges attract and like charges repel. The positive charge on the nucleus attracts and "holds" the electrons in orbit about the nucleus. It is electromagnetics that holds the electrons in orbit about that nucleus. Answer2: The attraction of the positive nucleus attracts the electrons to the nucleus by a centripetal force vp/r where v= Z alpha c. The electrons exeert a centrifugal force cDEL.P = -cp/r cos(P). When the orbit is stable the centripetal force equals the centrifugal force vp/r = cp/r cos(P) and the electrons do not fall into the nucleus. The balance gives v/c = cos(P), the redshift. This is the result of the Quaternion Energy W = -vh/r + cP, the atom has a scalar energy -vh/r and a vector energy cmV=cP, the Momentum vector energy. The mystery of what holds the electron from falling into the nucleus is the Divergence of the vector energy. Physics has come to grips with the fact that energy is a Quaternion quantity with a vector energy and the Divergence of the vector energy creates the centrifugal force, the cosmological constant force and the Dark Energy.
What are true about Bohr's model of the hydrogen atom?
Electrons can exist only in certain allowed discrete energy states/ Photon absorption and emission are the result of transitions between energy states/ Electrons with more energy have orbits further from the nucleus
How do atoms from bonds with other atoms?
A chemical bond is an attraction between atoms that allows the formation of chemical substances that contain two or more atoms. The bond is caused by the electromagnetic force attraction between opposite charges, either between electrons and nuclei, or as the result of a dipole attraction (it is best not to continue and list all different physics dipoles).
Why does bigger size atom have more shielding effect?
The bigger the atom, the larger the number of electrons between the outermost energy level and the positively charged nucleus. As a result, the attraction between the electrons in the outermost energy level and the nucleus are slightly weaker, and so, the larger the atom, the greater the sheilding effect.
What causes an electron to jump from Atom to atom?
An electromagnetic force attraction between opposite charges pulls atoms together, either between electrons and nuclei, or as the result of a dipole attraction.
What element has greatest electrode negativity?
Electronegativity: is the ability of an atom to attract the bonding electrons in a covalent bond fluorine is the most electronegative element on the periodic table, and francium is the least, the reasons for this are fairly simple: The factor which affect electro negativity are similar to that of ionisation energy, if you are not familiar with this then here they are - nuclear charge; the greater the charge of the nucleus the more strongly the electrons are held towards the nucleus, thus increasing elecrtonegativity - shielding by inner electrons; the greater the number of shells between the outer electron shell and nucleus the less positive attraction will be 'felt' by the outer electron, as a result the elecrtonegativity decreases - and distance between nucleus and outer electron shell; attraction falls greatly as distance increases between outer electron shell and nucleus as a result as distance increase the elecrtonegativity of the element decreases. As fluorine has a small atoms the closer the nucleus is to the shared outer shell of electrons, so the more its will attract the bonding electrons in a covalent bond. Francium is the least as it has the most shells of the group 1 elements along with the greatest number of electrons, as a result both distance and shielding have been increase causing eleconegativity to decrease significantly.
What are the most active metals in group 1A increases?
The reactivity of the alkali metals increases as you go down column 1 (or 1A) in a periodic table. This occurs because the first ionization energy of the metals decreases, as a result of "shielding" the outermost electrons from the attraction of the positive nucleus by the inner electrons.
Why does atomic radii decrease moving left to right across a period?
From going left to right on a period, the electrons are filled in the same shell. The atomic number increases, hence the number of protons in the nucleus increases. The effective nuclear charge thus increases. As a result the nucleus exerts more attraction on the valence electrons and hence the size / radius decreases.
What is the part of atom?
An atom is composed by a nucleus where protons and, in case, neutrons are joined by the so called strong force, and a number of electrons equal to the number of protons in the nucleus. Electrons are in equilibrium around the nucleus (in a stable state) due to electromagnetic attraction between their negative charges and the positively charged protons in the nucleus. In the nucleus, the strong force (that is the net result of inter-quarks forces that emerges out of protons and neutrons) is stronger with respect to electromagnetic repulsion between positively charged protons, so that the nucleus is in a stable state (protons do not repel each other) even if it is formed by all positive and neutral particles.
Is a covalent bond the result of electrostatic attraction between oppositely charged ions?
A covalent bond is the result of atoms sharing electrons. What is described in the question is much more like an ionic bond where an electron/or electrons move from atom-to-atom.
What is the result of a nucleus?
A nucleus just is; there's no "result" about it.
What kind of charge is found on the oxygen atom of polar water molecule?
In a water molecule, the oxygen atom shares electrons with two hydrogen atoms, but it does not share equally since it has a stronger attraction for electrons than the hydrogen atom does, and the electrons therefore have a greater probability of being close to the oxygen nucleus than to the hydrogen nuclei. As a result, the oxygen atom has a negative charge. The hydrogen atoms are positively charged.
Do electrons orbit around the nucleus because there is an electrical charge between electrons and protons?
This is essentially correct. The electrons and protons have equal but opposite charges, and the fundamental law of electrostatics is that opposite charges attract and like charges repel. The positive charge on the nucleus attracts and "holds" the electrons in orbit about the nucleus. It is electromagnetics that holds the electrons in orbit about that nucleus. Answer2: The attraction of the positive nucleus attracts the electrons to the nucleus by a centripetal force vp/r where v= Z alpha c. The electrons exeert a centrifugal force cDEL.P = -cp/r cos(P). When the orbit is stable the centripetal force equals the centrifugal force vp/r = cp/r cos(P) and the electrons do not fall into the nucleus. The balance gives v/c = cos(P), the redshift. This is the result of the Quaternion Energy W = -vh/r + cP, the atom has a scalar energy -vh/r and a vector energy cmV=cP, the Momentum vector energy. The mystery of what holds the electron from falling into the nucleus is the Divergence of the vector energy. Physics has come to grips with the fact that energy is a Quaternion quantity with a vector energy and the Divergence of the vector energy creates the centrifugal force, the cosmological constant force and the Dark Energy.
Why is the radius of a negative ion always greater than the radius of a neutral atom?
A positive ion has less electrons in its shell than a neutral atom. As a result of this, there is less repulsive force between the orbiting electrons (less electrons, less force) and they can come closer to the positively charged nucleus (which is attracting them). You will have an especially large decrease in radius if you remove the last electron from a shell (the electrons are composed into shells, the first one takes 2 electrons, second one 6, the third one 10 and so on).
Why Na has higher shielding effect than Li?
The reduction in the force of attraction between the nucleus and the valance electrons by the electrons present in the inner subshells is called shielding effect.As you move from top to bottom in a group number of electronic shells increase so the number of electrons in the inner shells also increases. As a result shielding effct increases.Therefore Na will have higher shielding effect than Li as it comes after Li in the group.
