Question

dobereiner traid law advantages and disadvantages

Answer 1

it was only successful upto lighter elements such as calcium

Answer 2

$\red{\bigstar}\underline{\underline{\textsf{\textbf{ \: Required \: answer:- }}}}$

$\begin{gathered} \begin{gathered}\begin{gathered}\boxed{\begin{array}{c} \\ \underline{ { \pmb {\sf \red{ \dag \: \: advantages \: of \: newland \: law \: of \: octaves\: \: \dag}}}} \\ \\ \\ \footnotesize \bigstar \: \sf{he \: arranged \: the \: elements \: in \: horizontal \: row} \\ \\ \\ \footnotesize\bigstar \: \sf{he \: arranged \: them \: on \: basis \: of \: increasing \: atomic \: mass} \\ \\ \\ \footnotesize \bigstar \: \sf{the \: property \: of \: every \: 8 {}^{th} element \: was \: similar \: to \: 1 {}^{st}element } \\ \\ \\ \footnotesize \bigstar \: \sf{his \: arrangement \: was \: similar \: to \: musical \: notes \: do,\: re,\: mi. } \footnotesize \sf {}\end{array}}\end{gathered}\end{gathered} \end{gathered}$

$\begin{gathered} \begin{gathered}\begin{gathered}\boxed{\begin{array}{c} \\ \underline{ { \pmb {\sf \red{ \dag \: \: disadvantages \: of \: newland \: law \: of \: octaves\: \: \dag}}}} \\ \\ \\ \footnotesize \bigstar \: \sf{his \: arrangement \: was \: only \: applicable \: to \: lighter \: element.} \\ \\ \\ \footnotesize\bigstar \: \sf{after \: calcium \: every \: {8}^{th}element \: did \: not \: possess \: similar \: property. } \\ \\ \\ \footnotesize \bigstar \: \sf{ he \: adjusted \: to \: element \: in \: same \: slot \: like \: cobalt \: and \: nickel.} \\ \\ \\ \footnotesize \bigstar \: \sf{he \: assumed \: that \: there \: were \: only \: 56 \: element \: existed \: in \: nature.} \footnotesize \sf {}\end{array}}\end{gathered}\end{gathered} \end{gathered}$

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