List the following components in order from least soluble to most soluble A. RbB

Question

List the following components in order from least soluble to most soluble
A. RbBr < Rb_2Se < SrSe B. RbBr < SrSe < Rb_2Se C. Rb_2Se < RbBr < SrSe D. SrSe < RbBr < Rb_2Se E. SrSe < Rb_2Se < RbBr List the following components in order from least soluble to most soluble
A. RbBr < Rb_2Se < SrSe B. RbBr < SrSe < Rb_2Se C. Rb_2Se < RbBr < SrSe D. SrSe < RbBr < Rb_2Se E. SrSe < Rb_2Se < RbBr
A. RbBr < Rb_2Se < SrSe B. RbBr < SrSe < Rb_2Se C. Rb_2Se < RbBr < SrSe D. SrSe < RbBr < Rb_2Se E. SrSe < Rb_2Se < RbBr

Explanation / Answer

Rb = pretty soluble, since it is alkali metal

Sr --> slightly soluble, since it is alkaline earth metal

NOTE:

Between RbBr and Rb2Se, expect Br- to be the most electronegative, so

RbBr is the most soluble

Then

Rb2Se, since it is still an alkaline metal

finally

SrSe, since Sr+2 is alkaline earth, which are not that soluble

so

bnest answer is A

A. RbBr < Rb_2Se < SrSe

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