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Whose atomic model first determined that electrons were in energy levels?
Wiki User
∙ 8y ago
Neils Bohr
Ambrose Krajcik
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What atomic particle is found in the orbitals or energy levels outside the nucle us?
Electrons
How many electrons are in the nucleus of an atom with the atomic number of 20?
None. Electrons are found in energy levels outside the nucleus, not in it. An atomic number of 20 tells you there are 20 protons in the nucleus of an atom, and 20 electrons in energy levels (or shells or orbitals depending on which model of the atom you are using) outside the nucleus.
Niels Bohr's contribution to modern atomic theory was the proposition that?
an atom has electrons in discrete energy levels
What trend in atomic radius occurs going down on the periodic table and why?
Atomic radii increases moving down a group in the Periodic Table due to the increasing energy levels in the electron configuration and electrons filling in energy levels further away from the nucleus.
In the element hydrogen what is the number of full electron levels?
hydrogen can only hold 1 electron. to find the # of electrons in a single element always look at the atomic number, the # of electrons = the # of protons (which is determined by the atomic #) since all single elements are neutral
Bohr's Theory suggests what?
Electrons are placed in determined energy levels.
According to atomic theory electrons are usually found?
in the energy levels. energy levels are in the electron cloud.
How the atomic model changed over time?
The atomic model has been refined from "the plum pudding" model,to a nucleus with orbiting electrons,to an awareness of many different sub atomic particles in the nucleus and electrons that are in energy levels,to electrons in sub energy levels and in distinct orbitals with different associated energy and behaviour
How are electrons arranged in the atom?
Electrons are arranged around the atomic nucleus forming the electron clouds.
What atomic particle is found in the orbitals or energy levels outside the nucle us?
Electrons
What information on the element is provided on the modern periodic table?
Symbol, Name, Atomic Number, Atomic Mas, Energy Levels, Electrons
How many electrons are in the nucleus of an atom with the atomic number of 20?
None. Electrons are found in energy levels outside the nucleus, not in it. An atomic number of 20 tells you there are 20 protons in the nucleus of an atom, and 20 electrons in energy levels (or shells or orbitals depending on which model of the atom you are using) outside the nucleus.
Niels Bohr's contribution to modern atomic theory was the proposition that?
an atom has electrons in discrete energy levels
How many electrons nitrogen has in its outer energy levels?
Nitrogen has atomic number = 7. The outer shell has 5 electrons, it requires 3 more electrons to complete the outer energy shell.
Which has the smallest radius K Rb K Rb?
Potassium's atomic radius is smaller than rubidium's because potassium has fewer energy levels of electrons.
Why do atomic radii generally get larger going down the periodic table?
As more energy levels are occupied by electrons, the atomic radius gets larger.
What explains the observed trend in the atomic radii going down the periodic table?
The more energy levels that are occupied by electrons, the larger the atomic radius.
