The electronegativity of germanium is 1.8; that of bromine is 2.8 on the Pauling scale. Will they form an ionic bond?

The answer to your question is No.

Explanation:

Data

Electronegativity of Ge = 1.8

Electronegativity of Br = 2.8

The Ionic bond definition is the union of a metal and a nonmetal which difference of electronegativity is 1.7 or higher.

The Covalent bond definition is the union of two nonmetals which difference of electronegativity is lower than 1.7.

Calculate the difference of electronegativity between the Ge and Br.

               ΔE = 2.8 - 1.8

               ΔE = 1

This elements do not form an ionic bonding, they form a covalent bond.

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.