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The model of the atom includes a positively charged center or nucleus. The nucleus consists of protons and neutrons, collectively nucleons.
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What did Rutherford proposed with regards to the structure of atoms?
Rutherford discovered the atomic nucleus and the proton. Rutherford don't discovered the atom. A short answer for the Rutherford atomic model: the atom is composed from a central part - a nucleus, positively charged, surrounded by electrons - very small negative charged particles.
What did Rutherford discover about atom structure?
Rutherford oversaw the gold foil experiment. This experiment showed that the atom is mostly empty space and that most of its mass is concentrated in a tiny central core called the atomic nucleus.
What was Ernest Rutherford's biggest contribution to chemistry?
In 1911, Rutherford proposed a new model for the atom. His experiments were the first to show that the atom must consist of a very tiny positively charged nucleus surrounded by negatively charged electrons. (For the record, Rutherford also discovered and named alpha, beta and gamma radiation.)
What are the differences between the plum pudding and planetary models of the atom?
The plum pudding model describes the atom as a pudding, occupying most of the volume an atom occupies. The pudding is positively charged. Inside the large pudding are negatively charged specs (plums), representing electrons. This model was found to be flawed because, when alpha particles were fired at atoms, it was found that a proportion of the positively charged alpha particles consisting of two neutrons and two protons backscattered. This meant that the positive charge density (charge per unit volume) of the atom must have been greater than what was described by the plum pudding model. For this to make sense, most of the atom must actually have been a vacuum. Therefore, the planetary model was created to describe atom more accurately. In the planetary model (nuclear model), the atom consists of electrons orbiting a nucleus. The nucleus consists of protons and neutrons.
What are the strengths and weaknesses of Dalton's atomic model?
strengths: -electrons move fast through the atom. -electrons are trapped within the atom by a positively charged nucleus -electrons are negatively charged. weaknesses: -failed to discover the nucleus contains positively charged particles called protons -failed to discover the nucleus also contains neutrons (a sub atomic neutral particle)
What best describes rutherford's model of the atom?
An example would be..Like a huge stadium with a positively charged marble at the center. Another example is..A small ball within a large shell containing empty space.
What are the key structural features of Thomson's 'Plum pudding' model?
Thompson's plum pudding model was that the raisin were negatively charged (electrons) and that the rest of the pudding positively charged.
Atoms are made up of negatively charged electrons embedded in a positively charged sphere?
in plum pudding model why thomson has considered electrons embedded in positively charged sphere?
What did Rutherford add to the atomic model?
He discovered that an atom has a very dense and very tiny positively charged nucleus. He named the positively charged particles protons.
What was Thomson's model of the atomic atom?
according to jj thomsons model of an atom,an atom consists of a positively charged sphere with electrons in it.however,it was later found that positively charged particles reside at the center of the atom called nucleus,and the electrons revolve around the nucleus.
What is the difference between the plim pudding model and the nuclear model?
The "plum pudding" (as they called it) model suggest's that the electrons were dispersed throughout the atom. Where as the nuclear model has positively charged protons which are present in the center of an atom (called the nucleus)
What do the raisins represent in the raisin pudding model of the atom?
The 'raisin pudding' model of the atom is more traditionally called the 'plum pudding model'. The plums represented negatively charged corpuscles (electrons) surrounded by a positively charged pudding. The plum pudding model became outdated in 1909 - 1911 when experiments showed that the positively charged atoms were extremely small.
What did ernest rutherford conclude about the nucleus of an atom?
Rutherford claimed that at the center of an atom there was a very tiny, very dense, positively charged part called a nucleus, surrounded by electrons at a distance.
What does Eugen Goldstein's atomic model look like?
it looks like a big circle and have a sign a positively charged
How can you describe in words ruthfords model of the atom?
the atom as a tiny, dense, positively charged core called a nucleus
Describe Rutherford's atom and compare it with the model proposed by his student Neil Bohr?
Rutherford's atom compared to the model proposed by his student Neils Bohr is very similar. Rutherford proposed a small positively charged nucleus with electrons orbiting around it. Bohr improved on this model by adding quantized energy levels to the orbits of electrons around positively charged nucleus.
Describe Rutherford's atom and compare it with the model proposed by his student Neil Bohr.?
Rutherford's atom compared to the model proposed by his student Neils Bohr is very similar. Rutherford proposed a small positively charged nucleus with electrons orbiting around it. Bohr improved on this model by adding quantized energy levels to the orbits of electrons around positively charged nucleus.
