Which of the following hydroxides is most basic? Mark as favorite Copy Link Mg(OH2 Ca(OH)2 Ba(OH)2 Be(OH)2 Check Answer
Pick out the chemically most reactive elements from the given triads. Li, Na, K F, Cl, Br? Mark as favorite Copy Link K and Br Li and Br Li and F K and F Check Answer
The family of elements to which potassium belongs is _________? Mark as favorite Copy Link noble gases halogens alkali metals alkaline earth metals Check Answer
Upto which element, the Law of Octaves was found applicable? Mark as favorite Copy Link Potassium Cobalt Calcium Oxygen Check Answer
An element ‘A’ belongs to the third period and group 16 of the Periodic Table. Find out the valency of A.? Mark as favorite Copy Link Valency = 6 Valency = 3 Valency = 2 Valency = 1 Check Answer
An element has atomic number 17. To which group, period does it belong? It is metal or non-metal? Mark as favorite Copy Link 17th group, 3rd period, Metal 7th group, 3rd period, Metal 7th group, 2nd period, Non-metal 17th group, 3rd period, Non-metal Check Answer
The arrangement of elements in the Modem Periodic Table is based on their? Mark as favorite Copy Link increasing atomic mass in the group increasing atomic number in the vertical columns increasing atomic mass in the period increasing atomic number in the horizontal rows Check Answer
The metal which is hard and has high melting point and used in filaments of electrical bulbs is? Mark as favorite Copy Link Pt W Fe Ni Check Answer
An element has configuration 2, 8, 1. It belongs to, _________? Mark as favorite Copy Link 17 group and 3rd period 1 group and 8th period 1 group and 3rd period 3 group and 1st period Check Answer