Answer:
c. 6.
Explanation:
Based on the question's description, the elements must be from the p-block of the periodic table and in the fifth period. They should have valence electrons located in the 5p orbital.
The following elements from the p-block of period 5 meet these criteria: Sr, In, Sn, Sb, Te, and I.
Therefore, there are a total of six such elements.
Answer:
Batteries operate by allowing charged ions to pass through an electrolyte solution.
A battery is essentially a device made up of one or more electrochemical cells capable of transforming stored chemical energy into an electric current. Each cell is comprised of a positive electrode (anode), a negative electrode (cathode), and electrolytes facilitating ion movement between the electrodes, enabling the current to flow from the battery to perform its function.
Explanation:
Its functionality is fundamentally reliant on a reversible chemical reaction known as reduction-oxidation, where one component undergoes oxidation while another is reduced; this process does not consume or lose any components but merely alters their oxidation states, allowing them to revert to their initial states under suitable conditions.
Is this a multiple-choice question? Is there an educational issue that needs to be resolved?
In my opinion, a helicopter would be the quickest mode of transport, just saying.
Now, construct a balanced equation:


exists in its gaseous form as a diatomic molecule.
Answer:
The work done in this process will be considered Negative.
Explanation:
The energy transferred by the system to the environment is negative
Therefore, if work is done on the system, it is labeled as positive. Conversely, when work is done by the system, it is regarded as negative.
In this scenario, the argon gas is expanding, and the work is exerted by the system into the surroundings (container), making the sign Negative.
Thus, the result for the work pertaining to this process will carry a Negative sign.