Ammonia is made up of nitrogen and hydrogen. Nitrogen is in Group 15 of the periodic table, and hydrogen is in Group 1. Which statement about the bonds in a molecule of ammonia is correct? Each nitrogen atom is bonded to two hydrogen atoms.

Each hydrogen atom is bonded to two nitrogen atoms.

Each nitrogen atom is bonded to three hydrogen atoms.

Each hydrogen atom is bonded to three nitrogen atoms.

Lead will be the least metallic of all the elements given.

Explanation: Metallic character is defined as the tendency of the metals to loose electrons easily.

The metallic character increases down the group and decreases across a period because the size of the elemnt increases down the group and decreases across a period.

Lead belong to Group 14 and Period 6 of the periodic table.

Mercury belongs to Group 12 and Period 6 of the periodic table.

Americium belongs to Group 8 and Period 7 of the periodic table.

Francium belongs to Group 1 and Period 7 of the periodic table.

Order of metallic character:

Francium > Americium > Mercury > Lead

From the order above, the lead will have the least metallic character.