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It depends on what level or period the atom is. Consult the Periodic Table, and you will see that period 1 has two electrons, periods 2 and 3 have 8, periods 4 and 5 have 18, and 6 and 7 have 32. Please see the related link below for more information.
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How does a vacuum tube work?
contains only a heated electron-emitting cathode and an anode. Electrons can only flow in one direction through the device—from the cathode to the anode. Adding one or more control grids within the tube allows the current between the cathode and anode to be controlled by the voltage on the grids.[5]
Why induced emf alternates?
Here is A Simple answer for this question as you know that emf is induced in the conductor when there is change of flux linkage to the conductor which gives rise to the inducement of electric field in the conductor that provide drift velocity to the electrons hence emf is induced in the conductor but the last only till the change in flux in progress and becomes zero as soon as the flux linkages becomes constant hence we summaraize that for inducement of current there must be change in change of flux hence change in electric field that gives rise to allternating emf.
How long can power generators provide power?
It depends on the size and power that the generator provides; some are only good for a couple of hours, some last for twenty four hours and still others are designed to last for up to four days.
How has being an electrician changed over the last twenty years?
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Why are lithium batteries more expensive than alkaline batteries?
They last longer and work more quickly
What are electrons in the last orbit?
Electrons in the last orbit of an atom are called valence electrons. These electrons are involved in the formation of chemical bonds with other atoms, determining the atom's reactivity and ability to form compounds. The number of valence electrons influences the atom's behavior in chemical reactions.
How many electrons are in the last orbit of Chlorine?
In the last orbit of Chlorine includes 7 electrons.Name: Chlorine Symbol: ClAtomic Number: 17Atomic Mass: 35.4527 amuNumber of Protons/Electrons: 17Number of Neutrons: 18
What does the electron configuration of an atom reveal?
It can reveal the number of valence electrons in the last shell.
Would a atom prefer to lose or gain electrons?
for that you should have the knowledge of the electron configuration 2,8,8,18,32,.. meaning first electronic orbit can have at the most two electrons. second orbit can have only 8 electrons and so on.... Now, for example calcium atomic number is 20 . so how will be the electrons placed 2 will go in the first orbit, 8 will go in the second orbit - so till now total is 10 we still have 10 more electrons to arrange. 8 electrons go in the third orbit and last 2 electrons go in the fourth orbit which actually has the capacity to accept total of 18 - now 2 electrons come in the fourth orbit so 18-2=16 . for any element it requires a lot of energy to get 16 electrons from the atom of other element so it will be better to loose 2 electrons for the calcium atom. Ca +2 means it has 2 electrons to loose . try this with different element and if you have any problem I will help you
What do metals do with electrons?
Metals are elements belonging to first , second or third group. They have one ,two or three valence electrons (electrons present in the last orbit of an atom). They lose this electrons to gain stability as they are highly unstable and by doing so they react . NOTICE: An atom can only lose the electron if an atom of other element is ready to take it.
What determines the stability or reactivity of an atom?
The numbers of protons and neutrons in its nucleus, and the number of electrons in its valence shell. The number of protons and neutrons will affect the element and the isotope number, some isotopes are stable, some are not. Atoms are also more stable with a full outer energy level (octet rule - 8 electrons in the outermost shell).
Valence electrons are the electrons found on the last shell of an atom true or fase?
True
What tells you how many electrons an atom must gain lose or share to become stable.?
atomic mas
How many valence electrons are present in an atom?
The number of valence electrons is the same number as the column of on the periodic table. Hydrogen has one, Calcium has two, etc. However, Helium may only have 2 and is an exception and Boron only wants 6 to fill its octet.
What are Lewis electrons?
valence electrons or electrons of the last level of electrons in an atom or the electrons in the last energy level of an atom, they have a negative chargethese electrons usually are the ones that take part in reacting, such as ionic bonding and covalent bonding :)
In general an atom is more stable with a full last electron shell What is the measure of the attraction that an atom has for additional electrons?
electron affinity C. electrons
The electrons farthest from the nucleus or most loosely held are called?
the electrons on the last shell of an atom are called valency electrons.
