Answer:
a) ⁴He₂
Protons = 2
neutrons = 2
ratio = 1:1
b) ²⁰Ne₁₀
Protons = 10
neutrons = 10
ratio = 1:1
c) ⁴⁰Ar₁₈
Protons = 18
neutrons = 22
ratio = 1.2 : 1
d) ⁸⁴Kr₃₆
Protons = 36
neutrons = 48
ratio = 1.33:1
e) ¹³²Xe₅₄
Protons = 54
neutrons = 78
ratio = 1.44 : 1
With the increase in atomic number the ratio increases.
Explanation:
Atomic number = number of protons
Mass number = number of protons + number of neutrons
So number of neutrons = mass number - number of protons
The element is represented as
Where
A = atomic mass
Z = atomic number
a) ⁴He₂
Protons = 2
neutrons = 2
ratio = 1:1
b) ²⁰Ne₁₀
Protons = 10
neutrons = 10
ratio = 1:1
c) ⁴⁰Ar₁₈
Protons = 18
neutrons = 22
ratio = 1.2 : 1
d) ⁸⁴Kr₃₆
Protons = 36
neutrons = 48
ratio = 1.33:1
e) ¹³²Xe₅₄
Protons = 54
neutrons = 78
ratio = 1.44 : 1
Answer:
The symbol of the Element is simply just the abbreviation.
Mercury: Hg
Potassium: K
Nitrogen: N
Copper: Cu
Sulphur: S
Carbon: C
Chlorine: Cl
Oxygen: O
The number of unpaired valence electrons determine the radical in any element.
Mercury: Hg 2+
Potassium: K+
Nitrogen: N 2+
Copper: Cu 2+
Sulphur: S 2-
Carbon: C 4+
Chlorine: Cl -
Oxygen: O 2-
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Answer:
A mixture is a physical combination of substances thus it only requires physical processes to separate. However, a compound is chemically combined and can only be separated by chemical processes. Therefore, it is much harder to separate a compound than a mixture.
the balanced equation for the formation of ammonia is as follows
N₂ + 3H₂ --> 2NH₃
stoichiometry of H₂ to NH₃ is 3:2
in gases number of moles of gas is directly proportional to volume of gases.
therefore molar ratio is equal to volume ratios.
this means volume ratio of H₂ to NH₃ is 3:2
volume of H₂ reacted - 54.1 L
if 3 L of H₂ forms - 2 L of NH₃
then 54.1 L of H₂ forms - 2/3 x 54.1 = 36.1 L of NH₃
volume of NH₃ formed is 36.1 L