Identify the elements that weren't arranged in the increasing order of atomic mass in the Mendeleev's periodic table.

Tellurium and Iodine

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Potassium and Calcium

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Cobalt and Iron

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Titanium and Vanadium

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A
Tellurium and Iodine

In the Mendeleev's periodic table, Tellurium comes before Iodine even if the mass of Tellurium(127.6) is greater than Iodine(126.9). Such an arrangement was adopted to group elements with similar properties together.

Suggest Corrections

Similar questions

According to Mendeleev’s periodic law, the elements were arranged in the periodic table in the order of :

(a) decreasing atomic numbers (b) increasing atomic numbers

Why should elements in periodic table be arranged in increasing order of atomic no. And not atomic mass.

Join BYJU'S Learning Program