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one of the chemical element in the fourth row..

i think... pretty sure LOL :)

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Q: What is the exception to the atomic mass trend in period 4?
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Related questions

What is the trend from left to right for atomic mass on the periodic table?

The atomic weight (not mass) increase from left to right in a period.


What do you predict the trend in atomic mass will be going down a group?

The atomic mass increases down a group.


What is the trend in atomic mass going down a group?

The atomic mass will increase. As you go down a group in the periodic table the atomic number rises, this increase in the number of protons is accompanied by an increase in the number of neutrons to stabilise the nucleus, and both together lead to an increase in atomic mass.


What is the general trend that you observe from a graph that plots atomic number vs atomic mass?

Atomic mass generally increasing with atomic number, although there are a few exceptions.


What is the trend for atomic mass?

It increases as you move to the right or go down


What element is a nonmetal in period 3 atomic mass 12?

No element in period 3 has an atomic mass of 12.


How can the atomic mass of the element be lower than the element that came before it?

Because the periodic table is organized by atomic number, not by atomic mass. The general trend in the periodic table is a higher atomic mass as you go up atomic number, but there are exceptions.


What is the atomic mass of hafnium?

The atomic mass of hafnium is approximately 178.49 atomic mass units.


How can you predict the properties of missing elements?

yes, properties of an element depends on its atomic number and atomic mass unless it is an exception and the atomic number and atomic mass of unknown elements are known by placing it in periodic table


What happens to the atomic number as you move across a period?

.The atomic mass increases 


Does atomic number equal atomic mass?

No. Atomic mass is the atomic number plus the number of neutrons. The only exception to this is the most common isotope of hydrogen, which has 1 proton and no neutrons, thus both the atomic mass and number are 1.


Nonmetallic period atomic mass 32?

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