Question

Calcium chloride, CaCl2, is an ionic compound in which? Question 37 options: ?each chlorine atom has lost electrons. ?one chlorine atom transferred an electron to the other chlorine atom. ?calcium has two extra electrons in its innermost shell. ?calcium has lost two electrons. ?calcium has gained two electrons. Save Question 38 (1 point)

A covalent bond is? Question 38 options: ?a sharing of protons between two atoms. ?the transfer of electrons from one atom to another. ?a type of bond that results in ionic compounds. ?an attraction of charged atoms. ?a sharing of electrons between two atoms. Save

Answer 1

Question 37

Ans:

Calcium chloride, CaCl2, is an ionic compound in which: calcium has lost two electrons.

Explanation:

- When metals react with non metals, electrons are transferred from the metal atoms to the non metal atoms, forming ions- the resulting compound is an ionic compound.

- The metal atoms gives electons to the non metal atoms-the metal atoms becomes positive ions and the non metal atoms becomes negative ions.

- In calcium chloride, metal atom is calcium while non metal atom is chlorine.

- Calcium loses two electrons and each chlorine atom gains one electron.

- Hence, calcium chloride is an ionic compound in which calcium has lost two electrons.

Question 38.

Ans:

A covalent bond is: a sharing of electrons between two atoms.

Explanation:

- A covalent bond holds two atoms close together because electrons in their outermost orbitals are shared by both atoms.

- Covalent bonds are stronger than ionic bonds.