Na, P, Cl, Si, Mg Which of these has largest atoms ?
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Answered by
17
electronic configuration of Na is 2,8,1
Na has the largest atom
If atomic number increases one by one meaning positive charge on the nucleus by one unit at a time due to the increase nuclear charge the electrons are full towards the nuclear to a greater extent and thereby the size of the atom decreases therefore any has the largest atom as its valence electron is 1
Na has the largest atom
If atomic number increases one by one meaning positive charge on the nucleus by one unit at a time due to the increase nuclear charge the electrons are full towards the nuclear to a greater extent and thereby the size of the atom decreases therefore any has the largest atom as its valence electron is 1
vikramjeet994pa7rwh:
cl
Can you please explain ?
Mg has atomic no 11
Why not Clorine ?
Its atomic number is 17
Cl because it has atomic no 17 and electronic configuration 2 8 7
Answered by
21
Out of the following The largest atoms is: Na (Sodium)
Atomic size of Sodium= 227 pm
Method to find out:
Requirement: You need to know the position of each atom in periodic table.
RULES:
Size decreases across the period
Size increases down the group
Since all the elements given are in third period.
Size decreases across the period, hence, The first element Sodium is largest.
Atomic size of Sodium= 227 pm
Method to find out:
Requirement: You need to know the position of each atom in periodic table.
RULES:
Size decreases across the period
Size increases down the group
Since all the elements given are in third period.
Size decreases across the period, hence, The first element Sodium is largest.
Attachments:
Thank u very much.
welcome :)
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