Question

chemists use integers to express the electrical charge of particles. a proton has a charge of +1, an electron has a charge of -1, and a neutron has no charge.
what integer represents the total charge of 4 protons?
what integer represents the total charge of 7 electrons?

Explanation:

Step1: Determine the charge of one electron

An electron has a charge of \(-1\).

Step2: Calculate the total charge of 7 electrons

Multiply the charge of one electron by the number of electrons. So, the total charge is \(7\times(-1)\).
Using the rule of multiplying a positive number by a negative number (\(a\times(-b)=-(a\times b)\)), we get \(7\times(-1)=- (7\times1)=-7\).

Answer:

\(-7\)