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Atoms and Atomic Structure
Questions about the structure of atoms/molecules and the resulting properties such as shape, polarity, and number of subatomic particles.
24,683 Questions
What subatomic particles make up an atom and where they are located?
There are three subatomic particles:
1. Proton - found in the nucleus which is at the centre of the atom
2. Neutron - found in the nucleus which is at the centre of the atom
3. Electron - found in the shells which surround the nucleus
8
2xN=2 Nitrogen atoms
+
2xH3=6 Hydrogen atoms
=8 total atoms
How many atoms does 2NaCl have?
Oh, dude, 2NaCl has a total of 12 atoms. Each NaCl molecule consists of one sodium atom (Na) and one chlorine atom (Cl), so when you have 2NaCl, you've got 2 sodium atoms and 2 chlorine atoms. That's like, basic chemistry, man.
Estimate the number of gold atoms in a gold coin with a diameter of 1 cm and a thickness of 1mm?
A gold coin with a diameter of 1 centimeter and a 1 mm thickness has a volume of .07854 cubic centimeters. Gold has a density of 19.30 grams per cubic centimeter. There is 1.5158 grams of gold or 7.7 millimoles or 4.637 E21 atoms.
What is the mass of 3.61 moles of Ca?
look its easy. if you have X moles of Ca you would look it up in the elements chart and figure it out right? now all you have to do is figure out how many moles do you get of each element in the compound above and sum them up. if it still doesnt help post on my message bourd ok?
Who made the statement that a neutral atom has the same number of protons and electrons?
An atom is neutral overall by definition - if it isn't neutral overall then it is an ion, not an atom. The charge on an electron is equal and opposite to that on a proton, so yes, an atom is neutral overall, and the number of electrons is equal to the number of protons.
How many electrons can nitrogen lend or borrow?
Phosphorous has 5 electrons in its valence shell.So, it needs to borrow 3 electrons to attain an octet of electrons.
However, this rarely happens as phosphorous forms bonds by covalent bonding in general.
When an atom gains or loses one or more electrons it becomes a particle called an?
An Ion.
An atom that loses electrons to become positively charged is a CATION.
An atom that gains electrons to become negatively charged is an ANION.
One there is an imbalanbced of electrons to protons, then it is is no longer and atom but an ion.
An ATOM is a neutrally charged species
An ION is a positively/negatively charged species.
How do atomic numbers relate to the number of particles in an atom's nucleus?
Atomic Number = the Number of Protons in the nucleus, = The number of electrons ( in the neutrally charged atoms).
Do NOT Confuse with Atomic Mass , which is the total number of protons AND neutrons in the nucleus.
How many atoms of each type are in 4C3H8?
Multiply the coefficient times the subscript for each element.
Carbon: 4 x 3 = 12
Hydrogen: 4 x 8 = 32
The mass of a Cr is 52 amu its atomic number is 24 how many neutrons are in its nucleus?
Since n + p = m, it follows that neutrons = 54 - 24 = 30,
because number of protons (p) is the atomic number (34)! That's how the periodic table is organized.
An atom is often represented as a miniature what?
Solar System, with the SUN as the nucleus, and the planets as the electrons.
If a hydrogen atom has 2 neutrons is it an isotope?
No <-- Ignore this bullsh*t. The normal hydrogen has no neutrons, the alternative forms of hydrogen are those with 1 or 2 neutrons and are called isotopes. For example, nuclear power plants use "heavy water" in cooling. Water is H2O, 2 hydrogen atoms and 1 oxygen atom. However, "heavy water" contains an isotope of hydrogen with 1 extra neutron in each hydrogen atom.
What is the atomic number of graphite?
'6'
Graphite is the commonest allotrope of CARBON.
Carbon has Atomic No. (Z) = 6 , and Atomic Mass (Ar) = 12
Other allotropes of carbon are 'Diamond' and 'Buckminster Fullerene(Footballene)'.
Allotropes are the same element , exhibiting itself in different physical states, because of the arrangement of the atoms in a sample.
Do protons and electrons cancel each other out?
well, neutrons are neutral which means it does not have a charge so if u only have electrons and neutrons, it would be negative, however if you had equal protons and electrons, it would be neutral.
What are the three particles found in atoms?
Proton, Neutrons and Electrons.
The protons and neutrons are found in the nucleus of tha atom, and are collectively named as 'nucleons'.
Electrons are found in energy shells outside the nucleus.
The analogy is the Sun is the nucleus , and the planets are the electrons!!!!
trisulfur(s3) thiozone, in sulfur vapors and solid at cryogenic temperatures.
When sodium atoms and chlorine atoms interact, the sodium atoms are converted to positively charged cations and the chlorine atoms are converted to negatively charged anions. The cations and anions to which the atoms have been converted are held together by mutual electrostatic charge attractions.
What is the lower limit for the mass of neutron stars?
Well, friend, neutron stars are truly marvelous. On their cosmic canvas, the lower limit for their mass is about 1.4 times the mass of our sun. That's a comforting thought to know these celestial wonders come in a variety of sizes.
Why are neutron stars called "neutron stars"?
Neutron stars are called "neutron stars" because they are composed mostly of neutrons, which are subatomic particles found in the nucleus of atoms. These stars form when massive stars collapse under their own gravity during a supernova explosion, leaving behind a dense core of neutrons.
Why do neutron stars have an upper mass limit?
Neutron stars have an upper mass limit because if they exceed this limit, the force of gravity becomes too strong and overwhelms the neutron degeneracy pressure that supports the star's structure, causing it to collapse into a black hole.
What is the difference between carbon atom and nitrogen atom?
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The chemical properties of an atom depend on the number of what?
The chemical properties of an atom depend on the number of electrons in its outermost shell, known as the valence electrons. These electrons determine how atoms interact with other atoms to form chemical bonds.
Is H2O2 a chemical compound or an element?
H2O2 is a chemcial COMpound.
It is formed from atoms of the elements oxygen and hydrogen combining together.
H2O2 is hydrogen peroxide. Structure is H-O-O-H
Compare with
H2O is water . Structure is H-O-H
