Answer:
Option-B (Carbon and Silicon)
Explanation:
Among the given pairs only carbon and silicon have the most similar properties. This is because,
Sodium and Magnesium belong to different groups. Sodium present in Group I has one electron in its valence shell and capable of transferring only one electron while, Magnesium present in Group II have two electrons in its valence shell and is capable of donating two electrons. Hence, both show different properties.
Example:
2 Na + Cl₂ → NaCl
Mg + Cl₂ → MgCl₂
As shown in reactions when Sodium and Magnesium are treated with Cl₂ they give a products with different proportions.
Carbon and Silicon show almost same properties because both belong to Group IV hence both are capable of forming four bonds. Also, they share the same property of self linkage in making a long chains.
Argon and Chlorine also belong to two different groups. Argon is present in Group VIII (Noble Gases) and Chlorine is present in Group VII (Halogens). Hence, Argon is an inert specie which is non reactive while Chlorine gives different reaction easily.
Potassium and Calcium belong to different groups. Potassium present in Group I has one electron in its valence shell and capable of transferring only one electron while, Calcium present in Group II have two electrons in its valence shell and is capable of donating two electrons. Hence, both show different properties.
Example:
2 K + Cl₂ → KCl
Ca + Cl₂ → CaCl₂
As shown in reactions when Potassium and Calcium are treated with Cl₂ they give a products with different proportions.
Answer: The star's core shrinks, and it becomes a white dwarf.
1.422 × 10^3
hope this helps!
Answer:
A container of hot water was left out on a table. Some of its thermal energy was transferred to the environment. The results in degrees Celsius are shown here. ... Solar energy warming a room.
Explanation:The relationship between the temperature of a system and the total energy of the ... Identical containers, made of different materials, were filled with hot water, ... Which of the following is evidence of energy transfer resulting from the change in the ... cube was monitored for 30 minutes and the results graphed as shown here.
My answer -
<span> The
profession which uses a radiation shield is a geologist. This profession
is involved in studying the solid and liquid matter in the Earth along
with it are the processes and history that helped shaped it.
P.S
Happy to help you have an AWESOME!!! day ^-^
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