Electrons and Periodic Table

The number of protons and neutrons approximately equal what in an atom?

What are periods?

The sum of negative and positive charges.

In what period is the following element?

A particle of the nucleus that is without charge that contributes to the mass of an atom

Particles that are smaller than the atom.

A negatively charge subatomic particle that orbits the atomic nucleus.

How many valence electrons are there in an atom in Period 4, Group 7

An atom with 8 valence electrons will have what reactivity?

The electrons in the outermost energy level of an atom

How many energy levels in an atom in Period 7, Group 5?

What is the overall charge of the nucleus

An atom with one valence electron would have what reactivity?

Rate at which a substance tends to undergo a reaction; influenced by valence electrons

The area surrounding the nucleus of an atom where the electrons are found.

In what Group is the following element?

What are Groups?

They are typically solid, shiny, malleable, and good conductors of heat and electricity.

What is the atomic number?

The tiny, positively charged region in the center of an atom; made up of protons and neutrons.

Typically not shiny, usually a gas or brittle solid, and poor conductors of electricity

What do you call this type of atomic model?

What is the charge of the nucleus in the atom below?

The smallest particle of an element, made of electrons, protons, and neutrons.

What fills up most of the atom?

The numbers of protons and electrons in an atom determine the -

Groups tell you what?

What is the charge of the nucleus in the atom below?

The area surrounding the nucleus of an atom where the electrons are found.

A positively charged subatomic particle of the nucleus that contributes to the mass of the atom

Where is all the mass in an atom?

Periods tell you what?

What is the charge of the electron cloud in the atom below?