Answer:
When calcium reacts with tellurium it will donates its two electrons and these two electron will be accepted by tellurium.
There must be 1 calcium atom for every 1 tellurium atom in the reaction.
Explanation:
Calcium has atomic number of 20. Its electronic configuration is given as:
![[Ca]=1s^2 2s^2 2p^6 3s^2 3p^6 4s^2](https://tex.z-dn.net/?f=%5BCa%5D%3D1s%5E2%202s%5E2%202p%5E6%203s%5E2%203p%5E6%204s%5E2)
Calcium atom will loose 2 elections to attain electronic configuration of noble gas.
![[Ca^{2+}]=1s^2 2s^2 2p^6 3s^2 3p^6 4s^0](https://tex.z-dn.net/?f=%5BCa%5E%7B2%2B%7D%5D%3D1s%5E2%202s%5E2%202p%5E6%203s%5E2%203p%5E6%204s%5E0)
Tellurium has atomic number of 52. Its electronic configuration is given as:
![[Te]=1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^{10} 4s^24p^6 4d^{10} 5s2 5p4](https://tex.z-dn.net/?f=%5BTe%5D%3D1s%5E2%202s%5E2%202p%5E6%203s%5E2%203p%5E6%204s%5E2%203d%5E%7B10%7D%204s%5E24p%5E6%204d%5E%7B10%7D%205s2%205p4)
Tellurium atom will gain 2 elections to attain electronic configuration of noble gas.
![[Te^{2-}]=1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^{10} 4s^24p^6 4d^{10} 5s2 5p6](https://tex.z-dn.net/?f=%5BTe%5E%7B2-%7D%5D%3D1s%5E2%202s%5E2%202p%5E6%203s%5E2%203p%5E6%204s%5E2%203d%5E%7B10%7D%204s%5E24p%5E6%204d%5E%7B10%7D%205s2%205p6)
So, when calcium reacts with tellurium it will donates its two electrons and these two electron will be accepted by tellurium.
There must be 1 calcium atom for every 1 tellurium atom in the reaction.
<span>The measurement 4.06 x 10^-5g represents: 0.0000406 g</span>
Answer:
b. ICl experiences dipole-dipole interactions
Explanation:
The molecule with the <em>stronger intermolecular forces</em> will have the higher boiling point.
In Br₂, the Br-Br bond has a <em>dipole moment of zero</em>, because the two atoms are identical.
In ICl, the I-Cl bond, has two different atoms. One must be more electronegative than the other, so there will be a <em>non-zero bond dipole</em>.
ICl will have the higher boiling point.
a is <em>wrong</em>. Br₂ is nonpolar, so it has no dipole-dipole interactions.
c is <em>wrong</em>. Br₂ cannot form hydrogen bonds, because there is no hydrogen.
d is <em>wrong</em>. ICl has dipole-dipole interactions.
Answer:
SI unit
Explanation:
the base unit of volume in the SI system is the cubic meter
- The key difference between tap water and distilled water is that tap water may contain impurities whereas distilled water does not contain impurities. Water covers more than 70% of the earth' surface. Thus, there is less than 1% of water left for direct human use.
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