Periodic Table

The period an element is in identifies

What was most impressive about Mendeleev's table was that

What does it mean to say an atom has achieved stability?

T/F: Hydrogen shares the same characteristics as other alkali metals

An Oxygen ion has 8 protons, 8 neutrons, and a -2 charge. How may electrons does it have?

This group will not typically be reactive because they already have a full outer energy level

Moseley improved Mendeleev's table by ordering the elements according to

T/F: ions are more likely to react than neutral atoms

The process in which an atom gains or loses electrons to become more stable

Elements in the same group have similar properties because they have the same number of

Group 2 elements are referred to as the

Which of the following is LEAST likely to form a positively charged ion

These metals are shiny, not very reactive, and good conductors of heat and electricity

How is the periodic table that we use today organized?

About how many known elements were there in the year 1860?

After ionization, an atom of Sulfur will likely form a

T/F: the K⁺¹ cation is made by adding a proton to the nucleus of a potassium atom

Mendeleev's table was also organized so that elements with similar properties fell in the same

What charge is an atom with 10 protons most likely to have?

An atom has a mass of 42, 22 neutrons, and a +2 charge. How many electrons does it have?

T/F: Elements become more metallic as you move across (left to right) the periodic table.

Mendleev's periodic table was organized in order of increasing _______

At the time, chemists were concerned with discovering patterns among the ______ of elements

T/F: The halogens are the most reactive group of nonmetals