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rusak2 [61]
3 years ago
7

What is an atom, and how is it composed?

Chemistry
2 answers:
ziro4ka [17]3 years ago
7 0
Atoms can join together to form molecules, which in turn form most of the objects around you. Atoms are composed of particles called protons, electrons and neutrons. Protons carry a positive electrical charge, electrons carry a negative electrical charge and neutrons carry no electrical charge at all.
Rudiy273 years ago
3 0
The atom is the smallest unit of an element that maintains the properties of that element. All atoms are composed of subatomic particles called neutrons (particles with no charge, neutral), electrons (negatively charged particles) and protons (positively charged particles).

The proton is located in the nucleus, an atom's central region. The number of protons in the nucleus is the atomic number, which determines the identity of an element. The neutron is located in the nucleus of an atom. Together, the total number of protons and neutrons in the nucleus determine the mass number of the atom.

The electron is likely to be found in the electron cloud, a region around the nucleus of an atom. The electrons located in the electron cloud interact with other atoms or ions when joining together to create a compound. A compound a substance made up of atoms or ions of two or more different elements joined by chemical bonds.

Hope that helps.

Happy learning! - Ann 

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ruslelena [56]

is the Calcium because the calcium in group two which group two has 2 electron and also calcium and Potassium 4s sub level group potassium has 1 electron. :)


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6 0
2 years ago
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A hypothetical covalent molecule, X–Y, has a dipole moment of 1.93 1.93 D and a bond length of 109 pm. 109 pm. Calculate the par
Gnesinka [82]

Answer:

q= 110.5 ke

Explanation:

Dipole moment is the product of the separation of the ends of a dipole and the magnitude of the charges.

μ = q * d

μ= Dipole moment (1.93 D)

q= partial charge on each pole

d= separation between the poles(109 pm).

e= electronic charge ( 1.60217662 × 10⁻¹⁹ coulombs)

So,

q= \frac{1.93}{109 * 10^{-12} } coulombs

q = \frac{1.93}{109 * 10^{-12} *  1.60217662 * 10^{-19} } e

q = 1.105 * 10⁵ e

q= 110.5 ke

4 0
3 years ago
Calculate the molarity of 0.300 mol of Na2S in 1.75 L of solution.
Jobisdone [24]
First equation:
molarity=
no.of moles of solute (Na2S)/volume of solution
0.300/1.75 = 0.171
second equation:
same law
but in volume it is milliliter so you have to convert it by multiplying it with 10^-3
(10 power -3)

to understand it clearly
see this
http://imgur.com/xTS35QM
5 0
3 years ago
Which is NOT a property of metals? Group of answer choices luster brittleness conductivity ductility
ki77a [65]

Answer:

wait i am kinda counfuesd

Explanation:

5 0
3 years ago
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