Strontium.
The strontium ion is positive, divalent, Sr2+.
Strontium form the divalent cation Sr2+.
I think it's negaive
Sr(NO3)2 Since strontium ion (Sr2+) has a charge of +2 and nitrate ion (NO3-) has a charge of -1, there must be 2 nitrates to account for 1 strontium making the formula neutral
The bipositive ion of strontium takes the electron configuration of xenon.
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.