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What is the group number of the most nonmetallic group that contains metalloids?
Its group 16
Does the first ionization energy increase or decrease when you go down a group?
it increases
Which is the only group that is completely nonmetallic?
These groups are 17 and 18.
Does an element on the periodic table decrease in atomic size when you move across a period from left to right and when you move down a group?
1. In a period is a trend of decrease from left to right but it is not absolute.2. In a group the atomic radius increase moving down.
How melting and boiling point varied in a period?
Generally melting point and boiling point increase up to group 6 and then decrease.
What element has the least nonmetallic character?
Assuming that "least nonmetallic" means the same as "most metallic", francium.
What is the only group that is completely nonmetallic?
Group 18
What is the group number of the most nonmetallic group that contains metalloids?
Its group 16
Does the first ionization energy increase or decrease when you go down a group?
it increases
What group consists of the most reactive nonmetallic elements?
Group 17, the halogens
Does the size of atoms increase remain the same or decrease from the top to the bottom of a group of elements?
yes
What is electron affinity . write down its trend in periods and group?
The electronegativity increase in a period from left to right; in a group decrease by descending.
Describe the trend in nonmetallic property of the elements in group 16?
The name of the group is the oxygen family. The valence number for elements in that group are -2. (gain or share two electrons) Oxygen, sulfur and selenium are nonmetals. Tellurium and Polonium are metalloids.
Which is the only group that is completely nonmetallic?
These groups are 17 and 18.
Why metlic character increases from top to bottom in a group of metals?
Down a group, the number of shells increases, also the atomic size. Thus , the metallic character increase does increase as going DOWN a group. It is easy to remove an electron froman atom of bigger...
What is the group trend in the first ionization energies and why?
1. The ionization energy decrease down in the group.2. The cause is that the distance between the nucleus and the electron shell increase and the needed energy to extract an electron decrease.
What is the group trend in p-block element?
The p-block elements show a trend in increasing atomic size and decreasing electronegativity as you move down a group. They also exhibit an increase in metallic character and reactivity towards metals, along with a decrease in ionization energy moving down the group.
