d - block and f - block Elements
Differentiating electron in inner transition elements enter the ________ orbital.
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Single Choice
Lanthanoids are
A14 elements in the sixth period (atomic no. = 58 to 71) that are filling 4f sublevel
Correct Answer
B14 elements in the seventh period (atomic no. = 58 to 71) that are filling 4f sublevel`
C14 elements in the sixth period (atomic no. = 90 to 103) that are filling 4f sublevel
D14 elements in the seventh period (atomic no. = 90 to 103) that are filling 4f sublevel
Solution
As sixth period can accommodate only 18 element in the table, 14 member of 6th period (atomic number 58 ot 71) are separately accommodated in a horizontal row below the periodic table. These are called as lanthanides.
SIMILAR QUESTIONS
d - block and f - block Elements
The trivalent ion having largest size in Lanthanide series is:
d - block and f - block Elements
The elements in which electrons are progressively filled in $$4f$$ orbital are called:
d - block and f - block Elements
Lanthanoids are
d - block and f - block Elements
Lanthanide contraction explains:
d - block and f - block Elements
Which of the following is the wrong statement?
d - block and f - block Elements
Across the lanthanoid series, the basicity of the lanthanoid hydroxides :
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