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Ronch [10]
3 years ago
7

Compare electron energy levels and nuclear rings (both physically and chemically)​

Chemistry
1 answer:
Nostrana [21]3 years ago
6 0
For electron energy levels, the electrons fill in until the energy level is full, which produces chemical stability. For the nuclear rings, protons and neutrons are physically filled in until the ring is full, which produces nuclear stability.
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How many atoms are there in 2.43 g of calcium?
Evgen [1.6K]

Answer:

Explanation:

We're asked to calculate the number of atoms of

Ca

in

153

g Ca

.

What we must first do is convert the given mass of calcium to moles of calcium, using its molar mass (referring to a periodic table, this is

40.08

g

mol

):

153

g Ca

(

1

mol Ca

40.08

g Ca

)

=

3.82

mol Ca

Using Avogadro's number,

6.022

×

10

23

particles

mol

, we can calculate the number of atoms present:

3.82

mol Ca

(

6.022

×

10

23

atoms Ca

1

mol Ca

)

=

2.30

×

10

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3 0
3 years ago
Can anyone tell me whether N2 bonds or Cl2 bonds are stronger? Thanks!
Nadusha1986 [10]

Answer:

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6 0
3 years ago
What do the numbers listed for an element on the periodic table represent?
Anna007 [38]
The smaller number is the number of protons, and the greater number is the mass.
8 0
3 years ago
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What is the name of the compound with the formula PbF2?
Ber [7]

Lead fluoride hope this helps

4 0
3 years ago
What is a possible quantum number set for an electron in the 2s orbital of a beryllium (Be) atom?
Artist 52 [7]

Answer is: 2,0,0,±1/2.

1) n = 1. The principal quantum number (n) is one of four quantum numbers which are assigned to each electron in an atom to describe that electron's state.

2) l = 0. The azimuthal quantum number is a quantum number for an atomic orbital that determines its orbital angular momentum and describes the shape of the orbital.

3) ml = 0. Magnetic quantum number specify orientation of electrons in magnetic field and number of electron states (orbitals) in subshells.

Magnetic quantum number (ml) specifies the orientation in space of an orbital of a given energy and shape . Magnetic quantum number divides the subshell into individual orbitals which hold the electrons, there are 2l+1 orbitals in each subshell.  

4) The spin quantum number, ms, is the spin of the electron; ms = +1/2 or -1/2.

7 0
3 years ago
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