Which electron transition represents a gain of energy?

A. from 2nd to 3rd shell

B. from 2nd to 1st shell

C. from 3rd to 2nd shell

D. from 3rd to 1st shell

What unit is most similar to light years

A galvanic (voltaic) cell consists of an electrode composed of nickel in a 1.0 M nickel (II) ion solution and another electrode composed of copper in a 1.0 M copper (I) ion solution, connected by a salt bridge.

2_PCl3 + __Cl2 → __PCL5 What is the answer

Is metallic bonds a compounds that are ductile and excellent conductors of electricity?

What can be said of a closed system when an exothermic reaction proceeds in an aqueous solution?

How many protons does one atom of sulfur have

Which shows the electron configuration for zinc (Zn) ? [Kr]5s24d10 [Kr]5s24d6 [Ar]4s23d9 [Ar]4s23d10

What is the oxidation number of chromium in the ionic compound ammonium dichromate (nh4) 2cr2o7?

Draw an ecosystem with 10 biotic and 5 abiotic factor

Which organism is responsible for cleanup in this ecosystem? coyote vulture prairie dog grasshopper or prairie grass