Question

Why iodine didn't exist in newland's octaves but existed in doberneir's triad

Answer 1

newland periodic table =>>>>

newland law of octave when newland arrange the elements in order of increasing atomic masses then they found That every 8th element had property similar to their 1st elements

drawback

# it is applicable only upto calcium

# the property of the new element couldn't fit in it

# In some cases the property of elements were not same as defined by law Of octave

fe placed far away from Co and Ni

# they worked well with only lighter elements

doberneir periodic table ==>>>>>

doberneir periodic table based on arithmetic mean they recognized there traids in which the average mass of 1st and 3rd was equal to the mass of 2nd element

drawback

all the known elements couldn't put in traids only 3 traids were recognized

Answer 2

Answer:

I think you are refering to the cbse book, but the whole table isn't given in the book.

Explanation:

Refer to the whole table.

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