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maxonik [38]
4 years ago
10

The electron configuration notation for Na is:o 1s22s22p63s21s 2s 2p 3s1s22s22p61s22s22p

Chemistry
2 answers:
irinina [24]4 years ago
4 0

Answer : The correct electronic configuration of sodium atom is,

1s^22s^22p^63s^1

Explanation :

Electronic configuration : It is defined as the representation of electrons around the nucleus of an atom.  

Number of electrons in an atom are determined by the electronic configuration.

Atomic number : It is defined as the number of electrons or number of protons present in a neutral atom.

The given atom is, sodium (Na)

Sodium is the 11th element which belong to period 1.

The electronic configuration of sodium atom is,

1s^22s^22p^63s^1

Radda [10]4 years ago
3 0
1s2 2s2 2p6 3s1 is the electron configuration for Na
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The mineral shown in this photograph is a sulfide mineral and commonly forms cube-shaped crystals. what mineral is it?
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Answer:

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5 0
3 years ago
what mass of carbon dioxide gas occupies a volume of 81.3 L at 204kPa and a temperature of 95 degrees celcius
pishuonlain [190]

The mass of carbon dioxide will be 238.51g

<u>Explanation:</u>

Given:

Volume, V = 81.3 L

Pressure, P = 204 kPa

                P = 204000Pa

Temperature, T = 95°C

                       T = 95 + 273K

                       T = 368K

mass of CO₂, m = ?

According to the gas law:

PV = nRT

where, R is the gas constant

n is the moles

and the value of R = 8.314 X 10³ L⋅Pa⋅K⁻¹⋅mol⁻¹

n = m/w

where,

m is the mass of the substance

w is the molecular weight

and molecular weight of CO₂ is 44 g

On substituting the value we get:

204000 X 81.3 = \frac{m}{44} X 8.314 X 10^3 X 368\\\\m = \frac{204 X 81.3 X 44}{8.314 X 368} \\\\m = 238.51 g

Therefore, the mass of carbon dioxide will be 238.51g

5 0
3 years ago
Write a balanced overall reaction from these unbalanced half-reactions. ln-&gt;ln3+ cd2+-&gt;cd
DochEvi [55]
Oxidation reaction 
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reduction reaction
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1) x 2
2) x 3
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4 years ago
What are some examples of chemical equations?
olga2289 [7]
Methane (CH4) and oxygen (O2) react to produce carbon dioxide (CO2) and water (H2O). CH4 and O2 are the reactants, while CO2 and H2O are the products.
6 0
4 years ago
A surface area of a sphere can be approximated as follows: surface area=4r^2 where the radius of the sphere is a constant that i
Illusion [34]

48 square unit

Explanation:

Given parameters:

Surface area of sphere = 4πr²

value of π = 3

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Unknown:

Surface area of sphere = ?

Solution:

To solve we input the given parameters in the formula for the surface area of the sphere.

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learn more:

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4 0
4 years ago
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