Question

What is the number of protons, neutrons, and electrons in caesium+1?

a: Protons: 55, Neutrons: 77, Electrons: 56
b: Protons: 55, Neutrons: 77, Electrons: 54
c: Protons: 56, Neutrons: 77, Electrons: 55
d: Protons: 56, Neutrons: 77, Electrons: 54

Answer 1

Caesium+1 has 55 protons, 77 neutrons, and 54 electrons; it is a caesium ion with one less electron due to its +1 charge.

Step-by-step explanation:

The number of protons, neutrons, and electrons in caesium+1 is: Protons: 55, Neutrons: 77, Electrons: 54. This is because caesium has an atomic number of 55, which defines the number of protons. Since it is a caesium+1 ion, it has lost one electron, which means there are only 54 electrons remaining. The number of neutrons is calculated by subtracting the atomic number from the mass number of the most abundant isotope of caesium, which is 132 (132 - 55 = 77 neutrons).