Compound Molecule Formation Explained
The question asks how molecules of compounds are formed. A compound is fundamentally defined as a substance containing two or more different chemical elements chemically bonded together in a fixed ratio.
Analysis of Options
- Option 1: Mixing ions without forming any chemical bonds - This describes a mixture, not a compound. Compounds require chemical bonds to form.
- Option 2: Different elements chemically bonded together - This is the correct definition of a compound. The smallest unit representing a molecular compound is its molecule, formed by the chemical bonding of atoms from different elements (e.g., water, H2O, is formed from hydrogen and oxygen atoms).
- Option 3: Metals joined with metals through metallic bonds - This describes metallic substances or alloys, which involve metallic bonding between atoms of the same or different metals. While alloys can be compounds, this option is too specific and doesn't cover all compound molecules.
- Option 4: One type of atom only with identical properties - This describes an element, not a compound. Molecules of elements consist of atoms of only one type (e.g., O2, N2).
Therefore, molecules of compounds are formed when different elements are chemically bonded.
Important Questions from Atoms
The ratio of radii of two nuclei having atomic mass numbers 27 and 8 respectively, will be:
Whose experiment showed that atoms have discrete energy levels ?
The ratio of the volume of an atom to the volume of the nucleus is (in terms of order of magnitude):
If $M$ is the mass of water that rises in a capillary tube of radius $r$, then what would be the total mass of water that rises if a capillary tube of radius $r$ and another capillary tube of radius $2r$ are simultaneously placed in water, assuming identical liquid and material properties?
A $Be^{3+}$ ion, initially in its second excited state, absorbs a photon of wavelength $601.6\text{ A}$. The radius of the ion in the resulting excited state in terms of Bohr radius $a_0$ will be (Take $hc = 12500\text{ eV-A}$)
