Lets take one element from Group 6A, Let it be oxygen, The electronic configuration of Oxygen is as follow,
O = 8 = 1s², 2s², 2px², 2py¹, 2px¹
There are 6 electrons in the valence shell of elements present in Group 6A. The unpaired electrons in 2px and 2py are involved in forming covalent bond, while the pair of electrons in 2s and 2px are unshared and act as lone pair of electrons.
Result:
There are TWO unpaired electrons present in the ground state of Group 6A elements.
Answer:
Explanation:
(3 pts) A 5.00 gram sample of an oxide of lead PbxOy contains 4.33 g of lead. Determine the
simplest formula for the compound.
Answer: Distillation is a process in which we use the boiling point, condensation of the substances to separate them from each other, it is a physical separation not the chemical because physical property of substance is used in it.
Now, the distinction in between a laboratory distillation and an industrial distillation is that, the distillation process in laboratory distillation works in batches, while in the industrial distillation it occurs in continuous manner, industrial distillation is the large scale distillation.
Answer:
18.81 g
Explanation:
We are given;
- Volume of Barium nitrate as 21.29 mL or 0.02129 L
- Molarity of Barium nitrate as 3.38 M
We are required to determine the mass of Barium nitrate
Step 1: Determine the number of moles of Barium nitrate
Number of moles = Molarity × Volume
= 3.38 M × 0.02129 L
= 0.07196 moles
Step 2: Determine the mass of Barium nitrate
We know that;
Mass = Number of moles × Molar mass
Molar mass of Barium Nitrate is 261.337 g/mol
Therefore;
Mass of barium nitrate = 0.07196 moles × 261.337 g/mol
= 18.8058 g
= 18.81 g
Thus, the mass of barium nitrate dissolved is 18.81 g
