He discovered the electron

The mass of an electron is

The number of neutrons in an atom is

The identity of an atom is determined by

He discovered the atomic nucleus

Positive ions result when an atom

In a compound formed between ions

If an atom is a halogen it will form a

The mass number of an atom is

Isotopes are

An ion of a certain element has 36 electrons. Which of the following elements can it not be?

The volume of an atom is mostly made up of

Which of the following elements is a metalloid?

The plum pudding model of the atom was proposed by

The average atomic mass of boron atoms is 10.8. Which of the following is not true?

Which is not a tenant of Dalton's atomic theory.

A pure substance

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