Answer:
2
Explanation:
Oxygen has 6 in the outer shell. So in order to complete its octet it only needs two electrons. Like in the Water molecule, oxygen forms covalent bond with two hydrogen atoms.
Answer:
<h3> I have many answers</h3>
<h3>1 The Periodic Table can predict the properties of new elements, because it organizes the elements according to their atomic numbers. ... They hope that the two nuclei at the centre of these atoms will fuse and form a heavier nucleus. When these heavy elements form, they are usually highly unstable</h3>
<h3>2 Periodic Trends Can the properties of an element be predicted using a periodic table? ... It includes information about atomic masses and element symbols, but it can also be used to make predic- tions about atomic size, electronegativity, ionization energies, bonding, solubility, and reactivity.</h3>
<h3>3 The periodic table is arranged in rows and columns in which the elements have similar properties. ... You can also predict which elements will combine with others, and in what ratios, because the number of electrons in the shells can be deduced.</h3>
