Electronic affinity increases as you move up a group, because going up a group there are fewer energy levels that stand between the postively charged nucleus and the outer level electrons. This doesn't really come into play as much as the trend moving across periods though. Electron affinity goes up left to right across a period, because as you approach the non-metals, the desire for atoms to gain electrons to satisfy the octet rule/achieve noble gas configuration goes up. By the time you reach the halogens (group 17), that affinity is very high, which makes the halogens the most reactive non-metals.
along the period increase electronegativity
If you pay attention the Periodic Table is in numeric order starting in the top left and ending bottom right.
The number of electrons in the atom increase from left to right and then from top to bottom.
valence electrons
Valence electrons increase in number on moving from left to right on the periodic table. another question might be
You use a Periodic Table to find the group, period, and the material of the 115 elements. You can find the the number of protons/electrons on the bottom of the symbols(which is arranged in oder). You can the mass number on the VERY bottom of the element's block. You can find out the number of neutrons by subtracting the number of protons/electrons from the mass number.
As you go down the columns of the periodic table the number of protons (and electrons) in the element increase. As the atomic number increases, so does the radius at each electron shell.
The number of electrons in the atom increase from left to right and then from top to bottom.
there are more electrons in the elements on the bottom of the table.
valence electrons
Valence electrons increase in number on moving from left to right on the periodic table. another question might be
You use a Periodic Table to find the group, period, and the material of the 115 elements. You can find the the number of protons/electrons on the bottom of the symbols(which is arranged in oder). You can the mass number on the VERY bottom of the element's block. You can find out the number of neutrons by subtracting the number of protons/electrons from the mass number.
As you go down the columns of the periodic table the number of protons (and electrons) in the element increase. As the atomic number increases, so does the radius at each electron shell.
The number of valence electrons remains the same
The atomic size increase from top to bottom of Periodic Table. As the number of shells increases from top to bottom, the atomic size increases.
The atomic size increase from top to bottom of periodic table. As the number of shells increases from top to bottom, the atomic size increases.
Increases.
Periodic table lists the elements in the increasing order of atomic number. Atomic number = Number of protons = Number of electrons
Towards the bottom, atomic mass increases. Atomic number also increases.