Which is NOT true of the Sc3+ ion? Multiple choice question.

A)
It is a scandium ion with three positive charges.

B)
It was formed by the loss of 4s and 3d electrons.

C)
It has the same electron configuration as Ar.

D)
It is considered to be a different element than a neutral Sc atom.

Which is the most likely way an automotive engineer would use chemistry

Astudent made the lewis dot diagram of a compound shown. what is the error in the lewis dot diagram? a)an o atom should transfer all of its six electrons to mg because the formula is mgo b) both electrons of mg should be transferred to one o adam because the formula is mgo c) the electrons should be transferred from each o add him to capital mg because mg has fewer electrons d) the number of dots around mg should be four because it has to transfer two electrons to each o

Zoe is investigating the composition of substance a, an unknown substance. using chemical processes, she analyzes substance a and determines it is composed of sodium, oxygen, and hydrogen atoms in a ratio of 1 : 1 : 1. what is substance a? a. a compound b. an element c. a heterogeneous mixture d. a homogeneous mixture