Co
Cr
It's chromium. The element would have lost 2 electrons from the 4s subshell, leaving 3d4 as your valence.
The most familiar one is aluminum, which can form ions with a charge of plus 3, for example in compounds such as aluminum oxide.
If you put a metal in an acid, the acid will take molecules or atoms away from the metal thus making the metal dissolve or seem to dissolve. It may not seem to dissolve if the acid is not strong enough to take away atoms or molecules. I learned this in my science class on Brainpop.com the video is called pH Scale if anyone wants to watch it.
two elements with ions with a 2 plus charge are Sulfurand Oxygen
Cr and Fe have four unpaired electrons in their 2 plus ions.
it because m2 plus ions have two valence electrons in two shells instead of one
Only non-metal+non-metal is considered covalent. Plus, protons are NEVER shared; just the electrons.
It's chromium. The element would have lost 2 electrons from the 4s subshell, leaving 3d4 as your valence.
51
A metal ion is a metal atom that has either lost or gained an electron (although most metals tend to lose electrons rather than gain them). Any atom that has lost or gained one or more electrons is called an ion. A metal ion is thus a metal atom with a charge. Some examples are Fe3+ (iron with a plus three charge, or that lost three electrons), Ag+ (silver ion with a plus one charge) and Cu2+ (copper with a plus 2 charge).
Ions are formed when atoms gain or lose electrons in their outer orbit/shell. Electrons are negatively charged so if they lose an electron they become positively (plus) charged.
calcium ions that has lost electrons. It will give away electrons.
b. Fe3 plus ions
Manganese is a chemical element, designated by the symbol Mn. It has the atomic number 25.Paramagnetism in the transition elements is caused by the presence of unpaired electrons in the d sub-orbital, and results in these elements being attracted by a magnetic field.Thats why mn show maxium paramagnetic character among ions of first transition elements.
Silver