What is a pure substance made of positive and negative ions in a fixed ratio called? (1 point) O a hydrogen bond
O a polar molecule
O an ioninic compound
O an atom

An ionic compound

Explanation:

• An ionic compound is a compound formed due to electrovalent bonding by sharing electrons (negative ions) and protons (positive ions).

• Since an ionic compound is stable, their is net charge because negative ions magnitude is equal to the magnitude of positive ions.

the child will have heterozygous dominant chromosomes as characters of his father are dominant over the characters of his mother.

the child is heterozygous

c (diamond),

sio2 (quartz)