Question

Represent the following using chemical symbol or formula
a. two atoms of the element neon
b. a molecule of the element nitrogen
c. a molecule of the compound carbon dioxide
d. three molecules of the compound water
e. four molecules of the compound magnesium oxide​

Answer 1

Answer:

Explanation:

a.Neon is a chemical element with a chemical symbol Ne and atomic number 10. It is a noble gas that is colorless, odorless, inert and monatomic.

b.The chemical formula for nitrogen gas is N2 . Nitrogen gas is one of the diatomic elements, in which one molecule consists of two atoms of the same element bonded by one or more covalent bonds

c.It also has a solid and a liquid form. Carbon dioxide is a molecule with the molecular formula CO2. Carbon dioxide, CO2, is a colorless gas. It is made of two oxygen atoms covalently bonded to one carbon atom.

d.The molecular formula for water is H2O. One molecule of water consists of one oxygen atom covalently bonded to two hydrogen atoms. There are three isotopes of hydrogen.

e.Magnesium oxide (MgO), or magnesia, is a white hygroscopic solid mineral that occurs naturally as periclase and is a source of magnesium (see also oxide). It has an empirical formula of MgO and consists of a lattice of Mg2+ ions and O2− ions held together by ionic bonding.

Answer 2

a). 2Ne

b). N₂

c). CO₂

d).3H₂0

e).4MgO

• a. Neon is an element with the chemical symbol Ne and atomic number 14. Two atoms of the element Neon are represented as 2Ne
• b. A molecule of Nitrogen is represented as N₂. Molecular nitrogen is an inert gas that is colorless and odorless.
• c. One molecule of carbon dioxide is represented as - CO₂
• d. water has three atoms - hydrogen(H) and 2 atoms of oxygen(O). Three molecules of water are presented as 3H₂0
• e. Magnesium oxide has 2 atoms of Magnesium(M) and oxygen(O).
• 4 molecules of magnesium oxide are represented as 4MgO

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