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ludmilkaskok [199]
3 years ago
6

Which particle often described as having very little or no mass since the mass number does not change when you add more and more

of them to an atom?
Chemistry
1 answer:
astra-53 [7]3 years ago
7 0

Answer:

I wrote this answer to get points lol

Explanation:

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What is the systematic name of the following compound?<br> Li2S
Nuetrik [128]

Answer:

the systematic name is called Lithium sulfide.

6 0
3 years ago
What might a physicit choose to study?
AlekseyPX
Thermodynamics, Nuclear Physics, Quantum Physics, Astronomy and Astrophysics
7 0
3 years ago
NOBLE GASSES) Why’ are they Inert tho
igomit [66]

Answer:

Why?  Because of electron shells.  Technically, they're not fully inert.  They have very low reactivity potential, and can only be forced to become reactive with difficulty.

Explanation:

All chemical reactivity is made possible through the atom's electron arrangement.  Electrons basically have shelves where they live, called "levels" or "shells".  Each level is farther from the nucleus than the previous one.  Atoms are most stable when their outer most shell (called the valence shell) is full.  Atoms with an incomplete shell will react with other atoms, in an attempt to either fill out the outer shell, or to rid itself of it's valence electrons so that that previous level becomes a full valence level.  If the valence shell ils already full, the atom will not be inclined to create compounds.

The first shell can hold up to two electrons.  After the first two electrons, any additional electrons have to begin a new shell.  The second shell can hold eight electrons before it becomes full.  Helium is the first noble gas on the periodic table, having two protons and two electrons.  Because helium's outer most shell is full, it does not react with other atoms.

By comparison, look at hydrogen and oxygen.  Oxygen has eight electrons.  The first two electrons occupy the first shell.  The remaining six go to the second shell.  This leaves the second shell with two empty spaces that can potentially be filled.  Meanwhile, hydrogen has one electron, with it's valence shell having an empty space for one additional electron.  Two hydrogen atoms give up their single electrons to an oxygen atom, so that all three end up with stable valence levels.

By the time an atom can fill out the second electron shell on it's own (10 total electrons) you end up with neon, the second noble gas.

5 0
3 years ago
Read 2 more answers
The mass of an object is 216 g and the volume is 24 ml. What is the density
Stells [14]

Answer:

<h2>9 g/mL</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

From the question we have

density =  \frac{216}{24}  \\

We have the final answer as

<h3>9 g/mL</h3>

Hope this helps you

6 0
2 years ago
In the coordination compound [Cr(NH3)2(en)Cl2]Br2, the coordination number (C.N.) and oxidation number (O.N.) of the metal atom,
erma4kov [3.2K]

The coordination number (C.N.) is 6 and oxidation number (O.N.) is +4 of the metal atom.

C.N. = 6; O.N. = +4

<h3><u>What </u><u>is Co-ordination number ?</u></h3>
  • The coordination number, also known as ligancy, of a central atom in a molecule or crystal in chemistry, crystallography, and materials science refers to the quantity of atoms, molecules, or ions bound to it.
  • A ligand is the ion, molecule, or atom that surrounds the center ion, molecule, or atom.
  • The number of atoms, ions, or molecules that a central atom or ion in a complex, coordination compound, or crystal holds as its closest neighbors.
<h3><u>What is Oxidation number ?</u></h3>
  • The total number of electrons that an atom acquires or loses to establish a chemical connection with another atom is known as the oxidation number, also known as the oxidation state.
  • Each atom involved in an oxidation-reduction reaction has an oxidation number that represents how many electrons it may take, give, or share.

To view more questions of coordination number, refer to:

brainly.com/question/8717978?referrer=searchResults

#SPJ4

7 0
1 year ago
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