Strontium Ion
Boron gains noble gas configuration by losing 3 electrons. So it forms positive ions.
A strontium ion has a charge of +2
This question is quite hard to understand. If you want the full words it's strontium plus. However, the metal strontium is in group II and usually forms Sr 2+. If you want the full electronic configuration it is 2,8,18,8,1 for the unipositive ion and 2,8,18,8 for the dipositive ion. To show this with the full subshell notation is very confusing without being able to do superscripts, but it's the same as krypton for Sr 2+, and [Kr] 5s1 for Sr +.
If an ion has 46 electrons and a 5+ charge, then it has 51 protons. It is an antimony ion (Sb5+)
Strontium.
Boron forms a tri-positive ion.
Strontium Ion
A strontium ion has a charge of +2
This just means it has a charge of 1+. The Boron ion can only have a charge of 1+.
The strontium ion is positive, divalent, Sr2+.
Boron gains noble gas configuration by losing 3 electrons. So it forms positive ions.
Te or Tellurium
the chemical symbol for boron ion is B+++
The name given to the electrical charge on an ion is a oxidation number. The charge of the ion typically formed by strontium is 2 plus.
Boron is an element.
strontium is a metal, therefore it must form only positive ions.