Which substance can not be decomposed by a chemical change? (1)mercury(ll) oxide (2) phosphorus (3) carbon monoxide (4) carbon dioxide

Covalent bonds generally form when the bonded elements have a difference in electronegativity less than 1.5. subtract the electronegativities for the following pairs of elements and predict whether they form a covalent bond. electronegativity difference of c and c: ionic covalent electronegativity difference of mg and cl: ionic covalent

What is the number of neutrons in an atom with atomic mass of 35

In medium-sized stars such as the sun, nuclear fusion almost always means the fusing of nuclei to form , but larger stars can produce elements as heavy as