Physics

Physics, 01.09.2019 04:10, deee12345

Why does an atom have a net zero charge?

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Physics, 26.07.2019 23:30, victoria1831

Ahydrogen atom can be considered as having a central point-like proton of positive charge +e and an electron of negative charge -e that is treated as a volume charge distribution around the proton which is given by: p=a*e^(-2r/a) and extends out to infinity. a is a constant, a is the bohr radius, and r is the distance from the center of the atom. a) using the fact that the hydrogen atom is electrically neutral ( meaning that the electron charge distribution must integrate to a charge of -e) find a. b) then, find the electric field produced by the atom at r=a.

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Chemistry, 04.08.2019 08:30, harcharikc8275

At the time of rutherford's gold leaf experiment, scientists knew that negatively charged electrons existed within the atom, but they did not know where the positive charge resided. what information about the positive charge was provided by rutherford's experiment? 1. there is no positive charge associated with an atom. 2. the positive charge can freely move within the atom. 3. the positive charge is spread throughout the atom. 4. the positive charge must be concentrated in a small core (the atomic nucleus).

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Chemistry, 19.08.2019 02:50, iicekingmann

In what respect does an atom of magnesium differ from a magnesium ion (mg^{2+})? (a)the ion has a more stable electronic arrangement than the atom. (b)the positive charge on the nucleus of the ion is two units greater than the nuclear charge on the atom. (c)the ion has two more protons than the atom. (d)the ion will react more readily with free cl₂. (e)the ion has two more planetary electrons than the atom. can anyone explain this one?

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Chemistry, 20.10.2019 12:10, amanquen35

In what respect does an atom of magnesium differ from a magnesium ion (mg^{2+})? a. the ion has a more stable electronic arrangement than the atom. b. the positive charge on the nucleus of the ion is two units greater than the nuclear charge on the atom. c. the ion has two more protons than the atom. d. the ion will react more readily with free cl₂. (e)the ion has two more planetary electrons than the atom. can anyone explain this one?

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