Classify each of the following solids as ionic, metallic, molecular, network (covalent)or amorphous? 1) Tetra phosphorous deicide(P4O10)
2)Graphite
3) Ammonium phosphate (NH4)3po4
4) Brass
5)SiC
6)Rb
7)l2
8)LiBr
9)P4
10) Plastic
11)Si​

Answer;

P4O10 - molecular solid

Graphite - network solid

Ammonium phosphate - ionic

Brass - metallic

SiC - network solid

Rb- metallic

I2 - molecular

LiBr- ionic

P4 - molecular

Plastic - amorphous

Si - network

Explanation:

An ionic solid is consists of a combination of two oppositely charged ions to yield a crystal lattice such as LiBr.

A covalent solid is one in whom the atoms of the molecule are held together by covalent bonds e.g I2.

Metals are held together by interaction of metal ions and a sea of electrons. This is called the metallic bond. Like SiC

A network solid consists of covalently bonded atoms held together by strong covalent bonds and the molecules in the solid state are held together by a continuous network of atoms.

a electronegativity decreases beacuse the size of nucleus is bigger.

the formula mass of a molecule or a compound is the sum of the atomic weights of the atoms in its empirical formula

(that's what i know about formula mass)