these elements are lithium, berylium, boron, carbon, nitrogen, oxygen, fluorine and neon.
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
No, period 1 elements are not more electronegative than period 2 elements. Electronegativity generally increases across a period from left to right, so elements in period 2 are generally more electronegative than elements in period 1.
There are 2 elements in the first period, 8, 8 elements in 2nd and 3rd periods respectively,
all elements in a period all have the same amount of shells example: all elements in period 1 has only 1 shell all elements in period 2 has 2 shells so the period number is the same as the number of shells in that period
The trend in period 2 ionization energy across the elements increases from left to right.
Group 4 elements on the periodic table contain no period 2 elements whatsoever.
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.
Neon is in row 2 of the periodic table of elements.
Seventeen
Two. Period 1 contains H and He.
all elements in a period have the same amount of orbitals and if an element is in period 2 it has 2 orbitals if it is in period 3 it has 3 orbitals ..etc
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.