Atomic Structure Review

Front

What is the atomic model proposed by John Dalton?

Back

John Dalton's model proposed that the atom is a solid sphere that cannot be divided into smaller parts.

Front

What is the atomic number of oxygen?

Back

The atomic number of oxygen is 8.

Front

Who is known for developing the first periodic table of elements?

Back

Dmitri Mendeleev is known for developing the first periodic table of elements.

Front

What does JJ Thomson's model of the atom propose?

Back

JJ Thomson's model proposes that the atom is a positively charged sphere with negative particles (electrons) embedded throughout.

Front

How many valence electrons are shown in the Bohr diagram for nitrogen?

Back

Nitrogen has 5 valence electrons.

Front

What is the charge of an electron?

Back

The charge of an electron is negative.

Front

What is the nucleus of an atom?

Back

The nucleus is the central part of an atom, containing protons and neutrons.

Front

What is the mass number of an atom?

Back

The mass number is the total number of protons and neutrons in the nucleus of an atom.

Front

What is the difference between an atom and an ion?

Back

An atom is neutral, while an ion has a net charge due to the loss or gain of electrons.

Front

What is the role of valence electrons in chemical bonding?

Back

Valence electrons are involved in forming bonds between atoms, determining the chemical properties of an element.