Question

variation of electron size in period and group​

Answer 1

Answer:

As we move across a period from left to right in the periodic table, the atomic size of an element decreases with the increase in atomic number. b. This is because, as the atomic number increases, the nuclear charge increases gradually but the addition of electrons takes place in the same shell

Answer 2

Answer:

The property trends in general on moving from left to right in a period of the periodic table are: #Number of valence electrons increases by one Metallic character decreases while non-metallic character increases (with the exception of Noble gases). Atomic radius – decreases. Electron affinity – increases. Electronegativity – increases (with the exception of Noble gases). Ionisation potential – increases.