Question

write four quantum numbers for the different electron of litheium atom explai​

Answer 1

Answer:

ANSWER:−

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Four quantum numbers are:-

Principal quantum number (n)

The principal quantum determines the size and energy of the orbital. n can have positive integer values like 1,2,3.... .Each principal quantum number represents an energy shell in the atom

n = 1 , 2 , 3 , 4

shell = K , L , M , N

Azimuthal quantum number (l)

Azimuthal quantum number is also known as orbital quantum number. Each shell consists of one or more Azimuthal shell.Ex :- 1s² ( 1 azimuthal shell) 2s² 2p³ (2 Azimuthal shell) . Azimuthal quantum number also tells shape of orbitals in 3-D.

Value of (l) = 0 , 1 , 2 , 3 ,...

Symbol of subshell = s , p , d , f ,....

Magnetic Quantum number (m)

For a given value of (l) [azimuthal quantum number] ,m can take value of range [ -l to +l] .

The spatial orientation of orbital w. r. t standard set of co-ordinate axis is determined by magnetic quantum number.

\begin{gathered}\boxed{ \begin{tabular}{ c | l } $ l & m \\ \cline {1 - 2} 0(s) & 0 \\ l(p) & -1 , 0 , 1 \\ 2(d) & -2, -1, 0 , 1 , 2 \\ 3(f) & -3 , -2, -1 , 0 , 1 , 2 , 3 $ \end{tabular}}\end{gathered}

Spin Quantum number (s)

An electron spins around its own axis. Spin angular momentum has two orientation.The two orientation are + 1/2 and -1/2

\boxed{ \uparrow \: \downarrow}

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Now let's solve the question..

For lithium,

it has 3 electrons

1s² , 2s¹

Principal quantum number is => 2

Azimuthal quantum number is => 0 (s-subshell)

Magnetic quantum number => 0 (s-subshell)

Spin quantum number for 2s¹ is => + 1/2

Explanation:

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Answer 2

Answer:

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Explanation:

Lithium has the electron configuration 1s2 2s1Quantum numbers would be

n=1, l=0, ml=0, s=+1/2

n=1, l=0, ml=0, s=-1/2

n=2, l=0, ml=0, s=+1/2