Introduction to the Electron

Introduction to the Electron

Assessment

Interactive Video

Science

6th - 8th Grade

Practice Problem

Hard

Created by

Larry Roskens

FREE Resource

8 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What analogy did John Newlands use to describe the periodicity of elements?

A musical scale

A planetary orbit

A deck of cards

A biological classification system

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What was a significant limitation of Niels Bohr's model for describing electron energy levels?

It could not account for the existence of the nucleus.

It only worked for single-electron atoms like hydrogen.

It failed to explain the concept of quanta.

It incorrectly assumed electrons were stationary.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How did the scientific understanding of electrons evolve from the early atomic models to quantum mechanics?

From waves to particles.

From stationary objects to orbiting particles.

From particles orbiting a nucleus to wave-particle duality.

From energy packets to discrete matter.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many electrons can the first electron shell (1s orbital) accommodate?

One

Two

Six

Eight

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which orbital is typically filled with electrons before the 3d orbital?

3p

4s

4p

3s

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the correct electron configuration for Iron (Fe), which has an atomic number of 26?

1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁸

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁶

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 4p⁶

1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the energy required to remove an electron from an atom to form a positively charged ion called?

Electron affinity

Electronegativity

Ionization energy

Bond energy

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