Periodic Classification Of Elements - Study Mode
[#216] The first and third members of the Dobereiner triad are phosphorus and antimony, the second member of this triad is-
Correct Answer
(D) arseni
[#217] Identify the element that does not belong to the following group.
Correct Answer
(B) Platinum
[#218] Which element has the highest electron affinity in halogens?
Correct Answer
(A) Cl
[#219] Which of the following is the minimum electronegative element?
Correct Answer
(A) Cs
[#220] The reactivity of non-metals within a group in the Periodic Table
Correct Answer
(B) decrease down the group