Electron structure, configuration and ions

• Science
• Lower Secondary (Key Stage 3)

Electron structure, configuration and ions

What is the subatomic particle that orbits the nucleus of an atom?

1. Proton
2. Photon
3. Electron
4. Neutron

What is the charge of an electron?

1. Negative
2. Neutral
3. Variable
4. Positive

Who discovered the electron in 1897?

1. Ernest Rutherford
2. Marie Curie
3. J.J. Thomson
4. Niels Bohr

What is the maximum number of electrons that can occupy the first energy level of an atom?

1. 8
2. 2
3. 6
4. 4

What is the term used to describe the energy levels where electrons are found in an atom?

1. Loops
2. Shells
3. Circles
4. Rings

What is the electron configuration of carbon?

1. 2, 8
2. 2, 4
3. 2, 2
4. 2, 6

What is the electron configuration of magnesium?

1. 2, 8, 8
2. 2, 6, 2
3. 2, 8, 6
4. 2, 8, 2

What is the electron configuration of sulfur?

1. 2, 8, 4
2. 2, 6, 8
3. 2, 4, 8
4. 2, 8, 6

What is an ion?

1. A compound with two positive charges
2. An atom with a positive or negative charge.
3. An element with no protons
4. A molecule with no charge

What is the charge of a cation?

1. Variable
2. Negative
3. Neutral
4. Positive

What is the charge of the ion formed by oxygen?

1. +2
2. -2
3. 0
4. Variable

What is the charge of a chloride ion?

1. 0
2. +1
3. -2
4. -1

Which ion is formed when oxygen gains two electrons?

1. O-2
2. O2+
3. O-
4. O2-

What are the rules of the energy levels?

What is the smallest particle of an element that still retains the properties of that element?

1. Molecule
2. Proton
3. Electron
4. Atom

Which subatomic particle has a positive charge?

1. Electron
2. Nucleus
3. Neutron
4. Proton

What is the central part of an atom that contains protons and neutrons?

1. Particle Cloud
2. Atomic Shell
3. Nucleus
4. Electron Cloud

Which subatomic particle has a negative charge and orbits the nucleus?

1. Neutron
2. Electron
3. Proton
4. Photon

What is the total number of protons and neutrons in the nucleus of an atom?

1. Atomic Mass
2. Isotopes
3. Atomic Number
4. Electron Configuration

Which element is a noble gas?

1. Nitrogen
2. Oxygen
3. Argon
4. Hydrogen

What is the atomic number of a typical noble gas?

1. 30
2. 12
3. 25
4. 18

What is the most abundant noble gas in the Earth's atmosphere?

1. Argon
2. Krypton
3. Helium
4. Neon

Which noble gas is used in lighting applications?

1. Helium
2. Neon
3. Radon
4. Xenon

Which noble gas is known for its use in medical imaging?

1. Krypton
2. Xenon
3. Neon
4. Argon