Mendeleev arranged elements according to increasing

The periodic table was later rearranged by

Today's periodic table is arranged according to increasing____________.

A verticle column is called a _______________ on the periodic table.

A horizontal row on the periodic table is called a ______________?

The __________ ______________ states that when the elements are arranged in order of increasing atomic number, there is a periodic pattern in their chemical and physical properties.

What elements are found in the s and p block?

Group 1 elements are called the __________________ metals.

The elements in group 2 are called the ________________ metals.

The elements in group 17 are called the ___________________.

Groups 1 & 2 are also referred to as the ________ block.

The elements in group 13-18 are also referred to as the ______ block.

Groups 3-12 are collectively called the ______________ metals

Metals are found on the __________________ side of the staircase on the periodic table.

Metals are __________________. Which means they can be hammered into different shapes.

Metals are ___________________, which means they can be made into wires.

Metals are good conductors of ________________ and _____________.

Which of the following is NOT a property of non-metals.

The _____________________________ metals are in the d block.

The ______________________ metals are found in the f block.

As you move from top to bottom down a group on the periodic table, the size of the atom will ______________________.

Why does the atomic radius increase down a group?

As you move from left to right across a period on the periodic table, the size of the atom will

The atomic radius decreases across a period because

Within a period the elements will have the same number of ____________________.

The ___________________________ effect is caused by inner electrons interfering with the attraction of outer electrons for the protons in the nucleus

Electrons which are further from the nucleus are ______________ attracted to the nucleus because of the shielding effect.

Which is has a smaller atomic radius?

Which has a smaller atomic radius?

Arrange these elements in order of decreasing atomic size: sufur, chlorine, aluminum and sodium.

Which element has the greatest atomic radius?

which element has the greatest atomic radius?

Which element has the smallest atomic radius?

Which element is smaller in size?

____________________________ is the tendency for the atoms of the element to attract electrons.

As you move across a period from left to right the electronegativity of an element will _____________.

As you move down a group, the electronegativity of an element will ______________________.

Which group of elements on the periodic table do NOT have defined values for electronegativity?

What is the highest possible value for electronegativity?

Which element has the higher electronegativity?

Which element has the higher electronegativity?

Which element has the highest electronegativity?

which element has the lowest electronegativity?

which element has the lowest electronegativity?

Which element has the higher electronegativity?

The energy required to remove an electron from a gaseous atom is ____________________________.

When an electron is removed the atom gets ________________ charge.

The energy required to remove a second electron is called the ______________________________.

It always requires _____________________ energy to remove a second electron.

The energy required to remove an electron is always much, much greatere if the atom is isoelectronic with a(n) ________________________.

Ionization energy of the elements will _________________ as you go down a group.

Why does ionization energy decrease as you move down a group?

The ionization energy of the elements will _________________ as you move from left to right across the periodic table.

Ionization energy will increase from left to right across a period because

Which element has the higher first ionization energy?

Which element has the lower first ionization energy?

Which element has the higher first ionization energy?

Which element has the lower first ionization energy?

Why is there a very large increase between 1st and 2nd ionization energies in group 1 elements?

Arrange the following elements in order of increasing ionization energy: He, Fr, Ga, S