5.1 the nuclear model of the atom MCQ

Hydrogen is an element with one Which statement proton. It has three different isotopes. about the three Hydrogen isotopes is correct?

A. They must have different numbers of electrons orbiting their nucleus.

B. They must all have one proton in their nuclei.

C. They must all have one neutron in their nuclei.

D. They must all have the same number of nucleons in their nucleus.

B

The nuclide notation for a generic element is given below: Which of the following is the correct definition of each of the terms?

A X= symbol

A= nucleon number

Z= proton number

B X= symbol

A= proton number

Z= nucleon number

C X= symbol

A= neutron number

Z= proton number

D X= nucleon number

A= proton number

Z= neutron number

A

An atom consists of electrons orbiting a nucleus. The nucleus contains protons and neutrons. For the atom to be neutral, which statement about the atom must be correct?

A. The number of electrons is equal to the number of protons.

B. The number of protons is equal to the number of neutrons.

C. The number of electrons, protons and neutrons are all different.

D. The number of electrons is equal to the number of neutrons.

A

The charge on an electron is -e.

Which answer below correctly describes the charge of a proton and the charge on a neutron?

A Proton = 0

Neutron = +e

B Proton = +e

Neutron = -e

C Proton = +e

Neutron = 0

D Proton = -e

Neutron = +e

C

Which of the answers below could be an isotope of Uranium?

A. 91 U 235

B. 92 U 238

C. 235 U 92

D. 90 U 235

B

Which of the following statements would not be correct for the nucleus of any atom?

A. The nucleus contains protons and neutrons.

B. The nucleus has a total charge of zero.

C. The nucleus is very small compared to the size of the atom.

D. The atom contains the same number of protons and electrons.

B

A nitrogen atom loses an electron. What is it called now?

A. An atom

B. An isotope

C. A negative ion

D. A positive ion

D