Question

(02.01 mc)
the table shows the charge on three unknown subatomic particles.

| charged particles |

particle	charge on particle
a	positive
b	no charge
c	negative

which particle(s) is(are) most likely present in the nucleus of the atom?

a only particle a
b only particle c
c both particles a and b
d both particles b and c

pregunta 5 (5 puntos)
(02.01 mc)
the table shows the number of charged subatomic particles in an ion.

| charged particles |

charge on particle	number of particles
positive	2
negative	3

a negatively charged substance is brought near the ion. what will most likely happen?

a the negatively charged ion will repel the substance.
b the negatively charged ion will attract the substance.
c the positively charged ion will repel the substance.
d the positively charged ion will attract the substance.

Explanation:

Step1: Recall atomic - structure knowledge

Protons are positively charged and neutrons are neutral. Both are in the nucleus. Electrons are negatively charged and outside the nucleus. Particle A (positive) is a proton and particle B (no - charge) is a neutron.

Step2: Determine nucleus particles

Since protons and neutrons are in the nucleus, particles A and B are most likely in the nucleus.

Step1: Calculate the net charge of the ion

The ion has 2 positive particles (protons) and 3 negative particles (electrons). The net charge of the ion is \(2\times( + 1)+3\times(-1)=2 - 3=-1\), so the ion is negatively charged.

Step2: Apply the charge - interaction principle

Like charges repel each other. A negatively charged ion will repel a negatively charged substance.

Answer:

c. Both particles A and B