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what is zeff?...

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what is zeff? explain

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B e

Z_{e f f} = 1.95

B e^{x +}, Z_{e f f} = 2.30

. Hence, ion is:

Q. Which is true about effective nuclear charge.
(A)

Z_{e f f} = Z - σ

(is Screening Constant)
(B)

Z_{e f f}

increases as we move from left to right in Periodic Table
(C)

Z_{e f f}

decreases from top to bottom
(D)

Z_{e f f}

increases from top to bottom

Z_{e f f}

for 4s electron in

_{30} Z n

Q. What is the total number of particles i.e.

(Z_{e f f})

in a 3-D hexagonal close packed (hcp) unit cell.

Is $Z_{e f f}$ the same in the following two cases?

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