1
Question
Complete the chart:
Name of
the element
Symbol
of the element
Atomic
number
Mass
number
No. of
protons
No. of
electrons
No. of
neutrons
Electronic configuration Argon 40 18 K = 2 L = 8 M = 8
Complete the chart:
Name of the element | Symbol of the element | Atomic number | Mass number | No. of protons | No. of electrons | No. of neutrons | Electronic configuration | ||
| Argon | 40 | 18 | K = 2 | L = 8 | M = 8 | ||||
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Solution
Identify the chemical symbol of Argon:
The chemical symbol Argon is Ar.
Calculate the atomic number:
Atomic number = Number of electrons
Thus,
Atomic number = 18
Calculate the number of neutrons:
Mass number = Number of protons + Number of neutrons
Mass of neutrons = Mass number - Number of protons
Name of
the element
Symbol
of the element
Atomic
number
Mass
number
No. of
protons
No. of
electrons
No. of
neutrons
Electronic configuration Argon Ar 18 40 18 18 22 K = 2 L = 8 M = 8
Identify the chemical symbol of Argon:
The chemical symbol Argon is Ar.
Calculate the atomic number:
Atomic number = Number of electrons
Thus,
Atomic number = 18
Calculate the number of neutrons:
Mass number = Number of protons + Number of neutrons
Mass of neutrons = Mass number - Number of protons
Name of the element | Symbol of the element | Atomic number | Mass number | No. of protons | No. of electrons | No. of neutrons | Electronic configuration | ||
| Argon | Ar | 18 | 40 | 18 | 18 | 22 | K = 2 | L = 8 | M = 8 |
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