Only chlorine has a diatomic molecule biut any ion is 2-..
Halogens would form diatomic molecules with a oxidation state of -2
Hydrogen.
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
Diatomic molecules are two atoms of the same element that are bound together in their natural state. They are: hydrogen (H2), nitrogen (N2), oxygen (O2), and the halides, or halogens, in the next-to-last column of the period table, flourine (F2), chlorine (Cl2), bromine (Br2), iodine (I2), and astatine (At2).
A regular helium atom (He) has no ionic charge. The element in its standard form as it appears on the period table and in our everyday environment has two protons and two electrons. The positive charge of the protons cancel out the negative charge of the electrons, and so there is no charge left. Furthermore, helium is a noble gas, a family of elements which are extremely stable and will not react with anything under normal circumstances. If, however, an atom of helium where ionized in a lab, and stripped of its electrons, it would have a charge of plus two.
When there is an anion (negative charge) the radius will be larger because it is more full whereas it will be smaller if it is a positive charge because of less electrons. ex largest to smallest radius (K-,K, K+)
Hydrogen.
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
There is a firm IUPAC convention about the numbering of the groups in the periodic table. There does not appear to be one about numbering the periods. Sometimes the first row, containing only H and He is regarded as period 1, or sometimes as period Zero. I will presume that your question was using the first numbering, and frame an answer with respect to elements Na --> Ar Most of the lighter elements in the periodic table will form X2 gases. The ones that will not are (i) Those that have an exactly filled subshell in the electron structure of their atom, and (ii) Those that do not have significant vapour pressure below temperatures where molecules cannot exist, and all matter is monatomic. Na & Cl will form vapours of Na2 and Cl2 respectively. Al & Si do not evaporate until very high temperatures, but low enough that some diatomic molecules can be found in what are largely monatomic vapours. P & S form vapours of P4 and S8 respectively at low temperatures around their respective boiling points, but in each of these cases there is a higher temperature range where P2 or S2 molecules can be observed. Mg and Ar do not form diatomic molecules in the gas (or any other) phase.
A period is a row of elements
They have the smallest nuclear charge of that period so there is less attraction for the electron allowing a larger orbital radius (larger size).
Diatomic molecules are two atoms of the same element that are bound together in their natural state. They are: hydrogen (H2), nitrogen (N2), oxygen (O2), and the halides, or halogens, in the next-to-last column of the period table, flourine (F2), chlorine (Cl2), bromine (Br2), iodine (I2), and astatine (At2).
A regular helium atom (He) has no ionic charge. The element in its standard form as it appears on the period table and in our everyday environment has two protons and two electrons. The positive charge of the protons cancel out the negative charge of the electrons, and so there is no charge left. Furthermore, helium is a noble gas, a family of elements which are extremely stable and will not react with anything under normal circumstances. If, however, an atom of helium where ionized in a lab, and stripped of its electrons, it would have a charge of plus two.
All elements comprising the period 7 in the periodic table are radioactive. In total this period has 32 elements.
all the elements in period 1 have one energy level, all the elements in period 2 have two energy levels, all the elements in period 3 have 3 energy levels... and so on
Down the group electron affinity decreases Across a period electron affinity increases. However, it should be noted that chlorine is having higher electron affinity than flourine due to the small size of fluorine atom)
Most banks will allow an account to remain negative for 30 days and then they will close the account ..many will charge fees during this period
When there is an anion (negative charge) the radius will be larger because it is more full whereas it will be smaller if it is a positive charge because of less electrons. ex largest to smallest radius (K-,K, K+)