Help asappp show work and help me plz for the other one just do 22,24,25 i will make you brainllest

What element is in the lathanide family?

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

Consider the four elements above. which one of these elements will combine with oxygen in a 1: 1 ratio?