The energy sublevel (s, p, d ,f) is always the same.
On the Periodic Table, a Period is one of the horizontal rows. If an element is last in it's period, then it's on the right hand side of the Periodic Table. There is an inert gas at the end of every Period.
i dont know i was waiting for u to tell me.....
The element hydrogen is common in acids and bases
Every single atom of sodium has exactly 11 protons in the nucleus.
its the 4th period
On the Periodic Table, a Period is one of the horizontal rows. If an element is last in it's period, then it's on the right hand side of the Periodic Table. There is an inert gas at the end of every Period.
The number of electrons in its valence shell
Least reactive
i dont know i was waiting for u to tell me.....
God gave every creature, organism, and element life.
Helium is a period 1 element.
The element hydrogen is common in acids and bases
Every single atom of sodium has exactly 11 protons in the nucleus.
He is in period 1.
That is not true. The first element in a period may be active or inactive, depending on the specific electron configuration of the element. For example, the first element in period 1, hydrogen, is not considered an active element.
The element neon is in period 2. Classified as a non-metal. :)
The element in period 4 of the Periodic Table with the highest electronegativity is krypton (2.96). The period 4 element with the lowest electronegativity is potassium (0.82).