1 point 50. Zinc does show variable
valency like d-block elements
because : *
O a) It is a metal
O b) It is low melting
c) Two melting are present in
outermost orbit
O d) d - orbital is complete.​

An object becomes electrically charged when: electrons are created in it electrons from it are destroyed electrons are transferred to it protons from it are destroyed protons are created in it

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled

In a ni-cd battery, a fully charged cell is composed of nickelic hydroxide. nickel is an element that has multiple oxidation states. assume the following proportions of the states: nickel charge proportions found 0 0.17 +2 0.3 +3 0.33 +4 0.5 (a) determine the mean of the nickel charge. enter the answer to 2 decimal places.(b) determine the cumulative distribution function of nickel charge.