Dobereiner Triad Rule Quiz

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According to the Dobereiner triad rule, how many elements are grouped together?

Four

Three (correct)

Two

Five

In a Dobereiner triad, what is the relationship between the atomic weight of the middle element and the average atomic weight of the first and third element?

The atomic weight of the middle element is equal to the average atomic weight of the first and third element. (correct)

The atomic weight of the middle element is greater than the average atomic weight of the first and third element.

The atomic weight of the middle element is unrelated to the average atomic weight of the first and third element.

The atomic weight of the middle element is less than the average atomic weight of the first and third element.

Which of the following sets of elements is an example of a Dobereiner triad?

(Li, Be, B) (correct)

(Na, Mg, Al)

(O, S, Se)

(Ca, Sr, Ba)

Which element's properties are similar to the properties of the 8th element in the Newland Octave Rule?

Na Signup and view all the answers

According to the Newland Octave Rule, how did Newland arrange the elements?

In the increasing order of their atomic mass Signup and view all the answers

Which type of elements were not known at the time of the Newland Octave Rule?

Noble gases Signup and view all the answers

According to the Dobereiner triad rule, how many elements are grouped together?

3 elements Signup and view all the answers

According to the Newland Octave Rule, how did Newland arrange the elements?

In order of increasing atomic number Signup and view all the answers

Which of the following sets of elements is an example of a Dobereiner triad?

Carbon, Silicon, Germanium Signup and view all the answers

Which of the following is a drawback or limitation of the Newland Octave Rule?

The rule fails in the case of heavier metals like Fe. Signup and view all the answers

Why is the Newland Octave Rule no longer applicable after the discovery of inert gases?

Inert gases do not follow the pattern of the Newland Octave Rule. Signup and view all the answers

Why does the Newland Octave Rule fail in the case of heavier metals like Fe?

Heavier metals have more than 8 elements in their period. Signup and view all the answers

Dobereiner Triad Rule Quiz

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Questions and Answers

According to the Dobereiner triad rule, how many elements are grouped together?

In a Dobereiner triad, what is the relationship between the atomic weight of the middle element and the average atomic weight of the first and third element?

Which of the following sets of elements is an example of a Dobereiner triad?

Which element's properties are similar to the properties of the 8th element in the Newland Octave Rule?

According to the Newland Octave Rule, how did Newland arrange the elements?

Which type of elements were not known at the time of the Newland Octave Rule?

According to the Dobereiner triad rule, how many elements are grouped together?

According to the Newland Octave Rule, how did Newland arrange the elements?

Which of the following sets of elements is an example of a Dobereiner triad?

Which of the following is a drawback or limitation of the Newland Octave Rule?

Why is the Newland Octave Rule no longer applicable after the discovery of inert gases?

Why does the Newland Octave Rule fail in the case of heavier metals like Fe?

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