NEW
Font size
WorksheetsAtomic Structure
Total questions: 10
Worksheet time: 5mins
A neutral element on the periodic table has an atomic number of 13 and a mass number of 27.0. The number of protons, neutrons and electrons it has is:
13 protons, 13 neutrons, 14 electrons
14 protons, 14 neutrons, 13 electrons
13 protons, 14 neutrons, 15 electrons
13 protons, 14 neutrons, 13 electrons
The current accepted model of the atom has the sub-atomic particles arranged as:
Protons, neutrons and electrons randomly scattered.
Protons and neutrons in the nucleus with electrons forming a charge cloud around the nucleus.
Neutrons and electrons in the nucleus with protons orbiting the nucleus in shells.
Protons and electrons in the nucleus with neutrons orbiting the nucleus in shells.
The mass number of an element is derived from:
The number of electrons and protons.
The number of electrons.
The number of protons and neutrons.
The number of protons.
An ion is an element that has:
Lost or gained protons
Lost electrons only
Lost or gained electrons
Lost neutrons
An isotope is a different form of the same element in which the number of:
Electrons varies
Neutrons varies
Protons varies
Electrons and protons varies
State the maximum number of electrons in the first three shells of an atom
8,8,18
2,8,12
2,8,8
2,8,18
In the ground state, the electrons of phosphorus occupy
1 shell
2 shells
3 shells
4 shells
When a fluoride ion forms a fluorine atom, which one of the following does not change?
The charge on the particle
The number of inner shell electrons
The number of electrons in the valence shell
The diameter of the particle
The element carbon has three naturally occurring isotopes. Which one of the following statements regarding isotopes is correct?
All isotopes have the same atomic number
All isotopes have the same mass number
The chemical reactions of the different isotopes are not the same
The heaviest isotope has the most electrons
What is the maximum number of electrons that can occupy the sixth electron shell?
8
18
50
72
