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Period 1: 2 elements
Period 2: 8 elements
Period 3: 8 elements
Period 4: 18 elements
Period 5: 18 elements
Period 6: 32 elements
Period 7: 25 elements
Wiki User
∙ 10y ago
Wiki User
∙ 12y agoThere are two elements in the first period, hydrogen and helium.
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How many elements in the original period table of elements?
103
The first period in the periodic table represents elements that possess only the first energy level s orbital therefore this period contains?
Two elements
The first elements in a period is always an?
alkali metal
The first period in the periodic table represents elements that possess only the first energy level s orbital therefore this period contains elements?
hydrogen and helium
How does the Bohr model of the atom relate to the Periodic Table?
The Bohr model of the atom places electrons in orbits or "shells." Elements in the first period only have electrons in the first shell. Elements in the second period have electrons in the first two shells. Elements in the third period have electrons in the first three shells, and so on.
What elements belong to the first period?
There are two elements in the first period, hydrogen and helium.
How many elements occur in each of the first three periods or the periodic table?
There are 2 elements in the first period, 8, 8 elements in 2nd and 3rd periods respectively,
How many elements in first period of periodic table?
2. hydrogen and something else
How many elements are there in third period?
8 elements
How many elements in the original period table of elements?
103
How many shells does hydrogen have?
All elements in the first period have 1 shell. That's hydrogen and helium.
The first period in the periodic table represents elements that possess only the first energy level s orbital therefore this period contains?
Two elements
The first elements in a period is always an?
alkali metal
The first period in the periodic table represents elements that possess only the first energy level s orbital therefore this period contains elements?
hydrogen and helium
How many elements are in periods 6?
there are 32 elements in period 6.
How many elements are in periods 4?
There are 18 elements in period 4.
How does the Bohr model of the atom relate to the Periodic Table?
The Bohr model of the atom places electrons in orbits or "shells." Elements in the first period only have electrons in the first shell. Elements in the second period have electrons in the first two shells. Elements in the third period have electrons in the first three shells, and so on.
