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The atomic masses of Li and K are 7 and ...

The atomic masses of Li and K are 7 and 39, respectively. According to law of triads the atomic mass of Na will be

A

23

B

32

C

46

D

64

Text Solution

Verified by Experts

The correct Answer is:
A
Atomic mass of middle element of triad is equal to average of masses of terminal elements.
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NTA MOCK TESTS-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES TEST -SINGLE CHOICE
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  10. A trend which is common to elements of both the group 1st and group 17...

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  12. Which of the following is incorrect ?

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