Which best represents a particle containing 28 protons, 26 electrons, and 34 neutrons?

This question lacks options, but the question can be answered based on knowledge of proton, electron and neutron number. The answer is:

62 Ni2+ particle

Explanation:

Nickel is a chemical element with atomic number 28. This means it has 28 electrons and 28 protons in its neutral atom. However, the isotope of nickel being described in the question has a mass number of 62. The mass number is calculated by adding the proton number with the neutron number. That is;

Mass number = number of protons + number of neutrons

Mass number = 28 + 34

Mass no. = 62

An element with mass number 62, which has lost two electrons to become positively charged (two positive charges) is described in the question. Hence, the particle that best fits this description is positively charged Nickel particle (Ni2+).

Ni2+ has 28 protons, 26 electrons (reduced by 2) and 34 electrons.

Note that, the 2+ charge is as a result of the loss of two electrons, hence, reducing the electron number by 2.

the answers would be

the first one and the second one