Periodic Table, Atom and Element Basics

The number of neutrons is determined by _______ the atomic number from the mass number.

Which of the following element and chemical symbols are matched incorrectly.

Each row of the periodic table is call a

What is the maximum number of electrons that are allowed on the second orbital?

Elements in Group One on the periodic table all have one electron in their outer shell.

Which of the following are nucleons?

Which of the following is NOT true about the element Hydrogen?

The number of _____ remains the same from top to bottom in a group in the periodic talbe.

What is the atomic number of an atom with 20 protons, 20 electrons, and 22 neutrons?

When an atom loses electrons it becomes ___________________

The number of protons in an atom is equal to the ______  _______  of the element.

The number of protons in the nucleus of an atom of that element is

Electrons in the outermost shell of an atom are called

In the periodic table the vertical columns that extend down the periodic table are called

The number of protons in an element has to be an even number?

The sum of the number of protons and neutrons results in an atom's approximate _____

Atoms that lose electrons and have a positive charge are called _____?

Which is an element?

What is the symbol for the element Oxygen?

These interact when atoms react

The ____ model has electrons in orbits around a nucleus

Isotopes are atoms of the same element with the same number of protons and

In a neutral atom, the number of protons is equal to the number of electrons

The modern periodic table is organized by _________________.

The space that represents the average distance from the nucleus that electrons travel is called

Dmitri Mendeleev created the first

Carbon has a mass number of 12.  Thus, it has _______ protons and __________ neutrons.

True or False?  The horizontal rows are called groups and the vertical rows are called periods.

The periodic table is a table for the _____.

What does the atomic number tell us?

What 2 things do the numbers inside the box of an element on the periodic table represent?