Examples: oxygen, sulfur, carbon, phosphorus etc.
The element hydrogen (H) occurs in most acids. This is because one common definition of acids is that they are proton donors, and the H+ ion is simply a proton. Examples of such acids are sulfuric H2SO4, hydrochloric HCl, ethanoic CH3COOH and carbonic H2CO3 acids.
The polyatomic ion with the most atoms per formula unit is the peroxydisulfate ion, ( \text{S}_2\text{O}_8^{2-} ), which contains a total of 10 atoms (2 sulfur and 8 oxygen atoms). Other complex polyatomic ions, such as certain phosphate or silicate ions, can also contain a large number of atoms, but peroxydisulfate is notable for its high atom count in a single formula unit.
The three most common such ions probably are sulfate, with the formula SO4-2, chromate, with the formula CrO4-1, and perchlorate, with the formula ClO4-1.
D. Oxygen. Oxygen is the most nonmetallic element in group 16, also known as the chalcogens. It has a high electronegativity and tends to gain electrons to form negative ions.
Examples: oxygen, sulfur, carbon, phosphorus etc.
Oxygen
Phosphorous or nitrogen
The element in the liquid with formula L2Br is Lithium.
The element that forms the cation (positive ion) comes first in the formula for an ionic compound.
There is no such formula, but most bases are weak except hydroxyl ions OH- and some uncommon ones.
Try "the proton" (change the electrons and you get ions, change the neutrons and you get an isotope.)
The element hydrogen (H) occurs in most acids. This is because one common definition of acids is that they are proton donors, and the H+ ion is simply a proton. Examples of such acids are sulfuric H2SO4, hydrochloric HCl, ethanoic CH3COOH and carbonic H2CO3 acids.
Most likely, MX3
Ca2+, AL3+,BR-
Molecular Ions essentially consist of the same type of atoms (most probably the atoms of the same element) and the radicals may not have the same characteristic.
Chlorine (Cl) is the most likely element to form an ionic compound with barium (Ba) due to their opposite charges and high reactivity. Barium typically forms Ba2+ ions, while chlorine forms Cl- ions, allowing them to easily combine to form BaCl2.