Actinides belong to which period?

4

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5

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6

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7

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Solution

The correct option is C $7$
Actinides belong to $7$ th period. They start from atomic number $90$ and ends in $103$ .

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Similar questions

Which of the following elements belongs to actinide series?

The atomic numbers of three elements A, B and C are given below :

Element Atomic number

A 5

B 7

C 10

(i) Which element belongs to group 18? (ii) Which element belongs to group 15?

(iii) Which element belongs to group 13? (iv) To which, period/periods do these elements belong?

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