Answer:A copper-gold alloy has a crystalline structure
Explanation:
E.) The shape of molecule which can form 3 bonds and no lone pair of electrons on central atom is trigonal planar.
Answer:
covalent
Explanation:
It is between two nonmetals so it is covalent. It would be ionic if it were between a metal and a nonmetal.
<h2>Answer:</h2>
Compound. Option A is correct
<h2>Explanations:</h2>
When two or more different elements combines, a compound is formed. For instance, if carbon and oxygen combines, carbondioxide is formed according to the equation;
From the reaction, carbon and oxygen are the elements while carbondioxide is the compound. Hence we can conclude that a pure substance formed when two or more different elements combine called compound.