Question

Predict which of the following has a covalent bond (refer to Periodic Table). HCl KCl NaCl all of the above none of the above Draw the structural formula for the chloride ion, ClO_2^-, and state the type of bonds in a chloride ion. 1 single bond and 1 double bond 2 single bonds 1 single bond and 1 triple bond none of the above Predict which of the following has a covalent bond (refer to Periodic Table) CoS CaS CdS all of the above none of the above Predict the number of resonance structure for a SO_2 molecule. 1 3 2 4 none of the above Which of the following atoms has 12 protons? Select one: F C Na Mg none of the above

Answer 1

11) HCl has a covalent bond.

Option A.

12)

Above is the structure of chorite ion.

As we can see from the structure it has one single bond and one double bond.

Option A.

13) Cds has a covalent bond because of the electronegativity difference is less.

It has slightly Ionic character too

14) SO2 has 2 resonance structures.

The molecule has a bent structure due to the lone pair of electrons on S. In the last structure that has a formal charge, there is a single S–O bond and a double S=O bond. These two bonds can switch over giving two resonance structures as shown below.

Option C

15) Mg has atomic number 12 so it has 12 protons

Option D