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What occurred in the Triassic period?
1st mammals & dinosaurs
Why are 1st group elements called as unipositive elements?
The alkali metals in group one are called unipositive because each atom allows one electron to move freely through out the bulk of the metal. This is know as the electronic sea. Group two atoms allow two electrons to move freely. The more electrons of each atom that is available for bonding the harder and more dense the structure.
Is electron affinity of N is greater than F?
No, it is not. Electron affinity follows a trend like electronegativity and hence increases as we move from left to right across a period. So, Fluorine has the highest electron affinity among 1st period elements.
What has the greatest first ionization energy Li Be B or C?
It's carbon. The trend for 1st ionization energy is that it increases as you move left-to-right across a period. As you move in that direction across period 2, ionization energy increases, and since carbon is the most to the right, it has the highest 1st I.E.
Is lead carbonate a precipitate?
Yes it is. All carbonates are insoluble, with the exception of 1st row elements.
How many elements are in the 1st row of the periodic table?
In the Periodic Table of Elements there are: 118 Observed Elements 114 Officially Discovered Elements 112 Officially named Elements 92 Naturally Occuring Elements 83 Non-radioactive elements
Define periodicity as it relates to the organization of elements on the periodic table?
The relationship is that the elements are organized by periods. Each row is a period and it goes from left to right. Each row is a period identified by different colors. Elements on the same row have something in common. All of the elements in a period have the same number of atomic orbitals. For example all the elements on the 1st row have only one orbital for its electrons. All the elements on the 2nd period (row) have two orbitals for its electrons. This repeats to period (row) 7. - Brian Tui
What are the release dates for 1st Amendment Stand Up - 2005 Martin Lawrence Presents the 1st Amendment Stand-up?
1st Amendment Stand Up - 2005 Martin Lawrence Presents the 1st Amendment Stand-up was released on: USA: 14 October 2005
What are the tradions of Christmas in France?
they believe they get there presents from santa on the 1st of December
Which period is shortest isn period table?
1st period.
Where in the periodic table is nitrogen found?
Nitrogen can be found in the 1st period of group 15 elements in the periodic table.
What are the release dates for 1st Amendment Stand Up - 2005 Martin Lawrence Presents the 1st Amendment Stand-up 1-1?
1st Amendment Stand Up - 2005 Martin Lawrence Presents the 1st Amendment Stand-up 1-1 was released on: USA: 14 October 2005
What are the 4 periods in the history of chemistry?
1st period,2nd period ,3rd and 4th period
What are the names of black actresses that 1st names begin with b?
Beah Richards
U might have to change your schedule from 1st period math to 1st period choir but your crush is in your 1st period and u have to change 2nd period too but your crush is in there too what should you do?
You should just stay in that class because then you are going to be able to see your crush more.
What happens to the radius of an atom as you go from the 7th period to the 1st period?
It increases.
What is the 1st period in the Paleozoic Era?
The first period in the Paleozoic Era was the Cambrian.
