Question

can anyone help me in this ​

Answer 1

1. A metal chloride

2. A metal oxide

3. +1 & +2

4.+2 & +3

5. -2

6. HCO3(-)

7. NO3(-)

8. SO4(2-)

I hope it helps..........

Answer 2

hey there! im not really sure but hey nothing wrong to try!

Answer:

1.IONIC COMPOUND

2.OXIDE

3.+1 AND +2

4.2 OR 3

5.2

6.HCO3-

7.NO

8.SO42-

Explanation:

1.When a metal reacts with non metal like chlorine, electrons are transferred from metal atoms to non metal atoms forming ions. The resulting compound is called as IONIC COMPOUND

2.The reaction between oxygen and another element generally results in the formation of a binary compound known as an oxide. The reaction itself is known as oxidation. For example, the oxidation reaction between oxygen and sodium produces sodium oxide. In many cases, an element may form more than one oxide.

3.Copper is one of the transition elements and thus exhibits variable oxidation states. It has two valencies: +1 and +2 and the corresponding atoms are termed as Cuperous (+1 valency) and Cupric (+2 valency).

4.Iron (Fe) has an atomic number of 26, i.e. has 26 electrons. The energy of 4s and 3d orbital is similar (4s has slightly higher energy). ... Now, iron exhibits 2 valence states of +2 and +3. When iron loses the 2 4s electrons, it attains a valency of +2

5.The valency of carbonate is two because it can combine with two hydrogen atoms.Each O atom has a negative charge, so it can combine with an H+ ion to form carbonic acid. Since carbonate can combine with two H atoms, its valency is two

6.Bicarbonate Ion is a polyatomic ion whose formula is HCO3-.

7.NO

8.The molecular formula for sulfate is SO42-. Four bonds, two single and two double, are shared between the sulfur and oxygen atoms.