Sodium Chloride is formed when atoms lose and gain electrons Carbon monoxide is formed when atoms share electrons. In both substances atoms are held together by a(n)

is it chemical bond
pls help me

In one case it is ionic

In the other case it is covalent
However
In both cases it is chemical

ITS COVALENT BOND

Yes, you are correct! In both sodium chloride and carbon monoxide, the atoms are held together by a chemical bond.

To understand why atoms form chemical bonds, we need to look at their electron configurations. Atoms are most stable when their outermost energy level, known as the valence shell, is either completely filled or contains eight electrons. This stability is called the octet rule.

In the case of sodium chloride (NaCl), sodium (Na) has one valence electron in its outermost energy level, while chlorine (Cl) has seven. To achieve stability, sodium readily loses its valence electron, becoming a positively charged ion (Na+). Chlorine, on the other hand, easily gains one electron, becoming a negatively charged ion (Cl-). The opposite charges of Na+ and Cl- attract each other and form an ionic bond, resulting in the formation of sodium chloride.

In carbon monoxide (CO), carbon (C) has four valence electrons, while oxygen (O) has six. Both carbon and oxygen need to gain or share electrons to achieve stability. In this case, carbon shares one of its valence electrons with oxygen, forming a covalent bond. The shared electron pair creates a bond between the two atoms, holding them together in the carbon monoxide molecule.

In summary, while sodium chloride forms an ionic bond due to the complete transfer of electrons, carbon monoxide forms a covalent bond through the sharing of electrons. But in both cases, a chemical bond is responsible for holding the atoms together.