1. As the first five elements in group 15 are considered in order of increasing atomic number , first ionization energy 1. Decreases
2. Increases
3. Decreases then increases
4. Increases then decreases

2. Based on table S , an atom of which element has the strongest attraction for electrons in a chemical bond ?
1. Aluminum
2.Chlorine
3.Magnesium
4.Sulfur

3. Which element reacts with oxygen to form ionic bonds ?
1.Calcium
2.Hydrogen
3.Chlorine
4.Nitrogen

there are no statements provided but here is why:

sulfur belongs to group 16 because it can be found in nature whether it is in a free or combined state.

hope this

conduction is the transfer of thermal energy (heat in transfer) due to collisions between the molecules in the object. collisions between adjacent atoms and molecules transfer kinetic energy from the warmer to the cooler object. the objects must be in physical contact.

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.