Period 2:
Li, Be, B, C, N, O, F, Ne
Group I:
The alkali metals:
Li, Na, K, Rb, Cs and Fr
and the first element in group I (non-metal) Hydrogen (H, gas)
There are 2 elements in the first period, 8, 8 elements in 2nd and 3rd periods respectively,
There are 4 electronic shells in period 4 while there are 5 shells in period 5.Elements of period 4 are smaller in size as compared to elements of period 5.Example of period 4 element is potassium and period 5 element is tin.
period 3
There are 32 elements in the 6th period of the periodic table.
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.
Li
lithium s atomic no is 3 it has 3 protons and 3 electrons
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
A period is a row of elements
alkaly metals
Lithiums in the group Alkali metals
All elements comprising the period 7 in the periodic table are radioactive. In total this period has 32 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.
At STP (Standard temperature and pressure) lithium is a solid.
There are two elements in the first period, hydrogen and helium.
There are 2 elements in the first period, 8, 8 elements in 2nd and 3rd periods respectively,
There are 4 electronic shells in period 4 while there are 5 shells in period 5.Elements of period 4 are smaller in size as compared to elements of period 5.Example of period 4 element is potassium and period 5 element is tin.