Answer:
Ionization energy of the metal and electron affinity of the nonmetal
Explanation:
An ionic bond is formed when a metal transfers electrons to a nonmetal.
M· + A ⟶ M⁺ + ·A⁻
The two main factors affecting this process are the
- Ionization energy of the metal
- Electron affinity of the nonmetal
1. Ionization energy
The lower the ionization energy of the metal, the more likely it is able to donate an electron.
2. Electron affinity
The higher the electron affinity of the nonmetal, the more likely it is to accept an electron,
3. Periodic trends
(a) Ionization Energy
Ionization energy increases from bottom to top and from left to right in the Periodic Table.
Thus, the atoms with the lowest ionization energy are in the lower left corner of the Periodic Table.
(b) Electron affinity
Electron affinity increases from bottom to top and from left to right in the Periodic Table.
Thus, the atoms with the highest electron affinity are in the upper right corner of the Periodic Table.
Answer:
1. In 0.0250 moles of potassium chromate there are 0.05 moles of potassium , 0.025 moles of chromium and 0.1 moles of oxygen are present.
2. In 4.50 moles of ammonium carbonate there are 9 moles of ammonium ions and 4.5 moles of carbonate ions are present.
Explanation:
1.
Moles of potassium chromate = 0.0250 mol
Formula of potassium chromate = 
1 mole of potassium chromate has 2 moles of potassium , 1 mole of chromium and 4 moles of oxygen.
Then in 0.0250 moles of potassium chromate:
Moles of potassium will be:
Moles of chromium will be:
Moles of oxygen will be:
2.
Moles of ammonium carbonate = 4.50 mol
Formula of ammonium carbonate =
1 mole of ammonium carbonate has 2 moles of ammonium ion and 1 mole of carbonate ion.
Then in 4.50 moles of ammonium carbonate:
Moles of ammonium ion will be:
Moles of carbonate ions will be:
Answer:
The second option is correct
= Acid can dissolve many metals
Explanation:
Acid reacts with most metals to liberate hydrogen gas, during the process the metals dissolve in the acid
Answer: The Diver's air tank is filled with oxygen gas.
The filling of air tank while keeping in water can be explained in reference to the Charles' Law.
Charles' Law: It states that the volume of the ideal gas is directly proportional to the absolute temperature at constant pressure.
(at constant Pressure)
The Scuba tank contains cold water and is present at high pressure. The gas which is put in the tank will be compact and would not expand. As the temperature is low inside the tank, hence by using Charles' Law, the volume will also decrease inside the tank.
When the air tank is filled, it is always kept in a tub of water because the pressure is high and hence, more oxygen gas can be filled inside the air tank.
I think its A because some scientist from the Department of Physics of Northeastern University found out that is not a part of Dalton's atomic theory.
