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What happens to the atomic number as you move across a period?
.The atomic mass increases
What element is a nonmetal in period 3 atomic mass 12?
No element in period 3 has an atomic mass of 12.
What is the atomic mass of hafnium?
The atomic mass of hafnium is approximately 178.49 atomic mass units.
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.
Nonmetallic period atomic mass 32?
sulfer
What happens to the atomic number as you move across a period?
.The atomic mass increases
What pattern repeats across the rows on the periodic table?
they go by there atomic mass's
What happens to the atomic mass as you go across a period from left to right?
It generally goes up, though there are exceptions.
Atomic size generally as you go down a group?
Atomic size generally increases as you go down a group
What element is a nonmetal in period 3 atomic mass 12?
No element in period 3 has an atomic mass of 12.
Does atomic density increase or decrease as we go across in a period?
It decreases across a period. Since the atomic number increases, so does no. of protons and electrons. This makes the electrostatic force of attraction between electrons larger and hence the atom shrinks a bit. This makes the radius smaller.
What is the atomic mass of hafnium?
The atomic mass of hafnium is approximately 178.49 atomic mass units.
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.
Why is the periodic table useful for studying the properties of different elements?
well, the periodic table is very useful because you have the atomic number, atomic mass, and even the trends across a period or down a group.
Nonmetallic period atomic mass 32?
sulfer
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 trends do you notice about the atomic number and atomic mass as you move left to right across the periodic table?
The atomic number increases from left to right. The atomic number also increases.However, there are few exceptions for atomic mass.
