1) Across the period as one moves from left to right, atomic size decreases.
2) Consider 3rd period elements containing non-metal i.e Si, P, S and Cl.
3) Here, atomic radius of these elements are in following order Si>P>S>Cl.
4) However, electronegative of these elements increases as we move from left to right
5) Thus, the corresponding hydrides have higher electro-negativity difference,as one moves from left to right.
6) Due to this, bond polarity increases from left to right,
7) Increase in bond polarity, results in increasing proton donating capability.
8) Therefore, acidity increases as one moves along the period.
Answer:
1. CaCO3 + 2HCl —> CaCl2 + H2O + CO2
2. Mg(OH)2 + 2HCl —> MgCl2 + 2H2O
3. Na2CO3 + 2HCl —> 2NaCl + H2O + CO2
Answer:
Explanation:
Trick question. The cathode is where the reduction reaction takes place. The reduction reaction is the gain of electrons.
Pb+2 + 2e^- ===> Pb The eo for that is - 0.126.
The minus sign indicates that the Pb^2+ is not overjoyed at taking on those two electrons. If it had a say in the matter, it would rather be giving up electrons. In other words, it would rather be the oxidizing equation which would look like this
Pb ===> Pb+2 + 2e^- and the oxidizing potential would be eo = + 0.126
That's what moving right and moving left means. If the eo is - then the preferred reaction is the opposite one.
This is a real language problem and if Znk answers you can take his answer to the bank.
Answer:
b
Explanation:
The correct answer would be <u>requiring individuals to complete specific types of work.</u>
<em>A question of how to produce deals with the processes of production itself. There are several small processes that eventually aggregate together to lead to the production of goods or services. Some of these small processes will definitely require that individuals within the production unit complete specific types of work.</em>
The option of growing corn instead of potatoes and producing more capital goods and fewer consumer products address what to produce while the option of selling natural resources to other countries has to do with for whom to produce.
Correct option: b
