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According to a law, the orbital with lower n+l value fills first. So 4S has lower energy
i.e. lower n+l value (4) than 3D (5).
So the elements after 3P^6 move to the 4th Periodic Table .
What else can I help you with?
How many elements in the first period?
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
How many electrons do period 3 in periodic table have?
period 3 elements in the periodic table have 3 electrons in there outher shell hence the name.
How many elements are in the third period?
Eight. Sodium, Magnesium, Aluminium, Silicon, Phosphorous, Sulfur, Chlorine, Argon
What are the two elements in the same period as magnesium?
Magnesium is in period 3 of the periodic table. The two elements in the same period as magnesium are aluminum (Al) and silicon (Si). Both elements follow magnesium in this period, with aluminum located to the right of magnesium and silicon further to the right.
Which of the representative elements in period 4 has 3 valence electrons?
The representative element in period 4 with 3 valence electrons is phosphorus.
What were the numbers of the elements in period 3?
11-18.
How many elements can the 3rd shell hold?
The 3rd shell can contain 18 electrons. The elements that have a 3rd shell as the outer shell are the the elements in period 3, where the 3s and 3p orbitals are filled to a maximum of 8 electrons. The 3d orbitals are filled in the 4th period in the transition elements.
How many elements in the first period?
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
How many electrons do period 3 in periodic table have?
period 3 elements in the periodic table have 3 electrons in there outher shell hence the name.
What period are the following elements?
period 3
Valencies of the first 20 elements?
Period 1 (Elements 1 and 2)1s1 - 1s2Period 2 (Elements 3 - 10)2s1 - 2s22p6Period 3 (Elements 11 - 18)3s1 - 3s23p6Period 4 (Elements 19 and 20)4s1 - 4s2
What is the maximum and minimum of 4 9 6 12 3 18?
18 and 3
How many energy levels are found in period 3?
The period number is equal to the number of energy levels. Elements of period 3 have 3 energy levels. Na,Mg,Al,Si are few elements in the period 3.
Which periods have the same number of elements?
Period 4 and period 5 of the periodic table have the same number of elements. There are 18 elements in each period. While some elements in period 4 are calcium, iron, and zinc, elements in period 5 are tin, antimony, and iodine.
How many electrons can occupy the 4f sublevel?
The elements in period 4 that have electrons in the 3d sublevel are elements 21 - 36. Refer to the Related Links for a printable periodic table that includes electron configurations.
What is the correlation of a period number with the elements of that period?
The period number of an element corresponds to the energy level of its outermost electrons. Elements in the same period have the same number of electron shells. As you move from left to right across a period, the number of protons and electrons increases, resulting in higher effective nuclear charge, which affects the properties of the elements.
Are the elements sodium magnesium and silicon in the same period of elements?
No, the elements sodium (Na) and magnesium (Mg) are in Period 3, while silicon (Si) is in Period 3 in the periodic table of elements. Sodium is in group 1, magnesium is in group 2, and silicon is in group 14.
