Can the following groups of elements be classified as Dobereiner's triad ?
(a) Na, Si, Cl
(b) Be, Mg, Ca
Atomic mass of Be 9 , Na 23 , Mg 24 , Si 28 , Cl 35 , Ca 40
Explain by giving reason.

Can the following groups of elements be classified as Dobereiner' s triad ? Na, Si, Cl

Can the following groups of elements be classified as Dobereiner' s triad ? Be, Mg, Ca Atomic mass of Be 9, Na 23, Mg 24, Si 28, Cl 35, Ca 40. Explain by giving reason.

Can the following groups of elements be classified as Dobereiner's triad: {:("(a) Na, Si, Cl"," (b) Be, Mg, Ca"):} Atomic mass of Be-9, Na-23, Mg-24, Si-28, Cl-35, Ca-40. Justify your answer in each case.

Can the following groups of elements be classified as Dobereiner's triad: {:("(a) Na, Si, Cl"," (b) Be, Mg, Ca"):} Atomic mass of Be-9, Na-23, Mg-24, Si-28, Cl-35, Ca-40. Justify your answer in each case.

Can the following groups of elements be classified as Dobereiner's Triads. i] Na, Si, Cl " " ii] Be, Mg, Ca Atomic mass of Be - 9. Na - 23, Mg -24, Si - 28, CI - 35, Ca - 40. Justify your answer.

Arrange the following elements in decreasing order of their atomic radius: Na, H, Si, S, P, Cl

Which of the following is not an example of Dobereiner's Traids a) Ca, Sr. Ba b) Cl, Br, I c) Li, Na, K d) Sr, Ba, Ra