1.Which of the following elements has the largest known oxidation number (in magnitude)?
Pt
Au
Os
Fe
Ru
2.Which of the following metals has the highest melting point?
Al
Mg
K
Na
Ca
I know that Ca is wrong because I tried it, so I really think it has to be Na that has the highest melting point out of all the others.
You can go to www.webelements.com an check on the melting point of each as well as the oxidations states of each.
To find the element with the largest known oxidation number in magnitude, you can refer to a reliable source such as the website www.webelements.com. This website provides detailed information about various elements, including their oxidation states.
1. Visit www.webelements.com or any other reputable resource for chemical information.
2. Search for each of the elements mentioned - Pt, Au, Os, Fe, and Ru - to find their respective oxidation states or valences.
3. Compare the oxidation states of these elements to determine which has the largest magnitude. The oxidation state can be positive or negative, and it represents the charge of an atom or ion when it gains or loses electrons.
Regarding the metal with the highest melting point:
1. Again, visit www.webelements.com or any other trusted source for accurate information.
2. Look up the melting points of the metals listed - Al, Mg, K, Na, and Ca.
3. Compare the melting points to identify the metal with the highest temperature at which it shifts from a solid to a liquid state.
It is important to verify information from reliable sources to ensure accuracy. By consulting a reputable website like www.webelements.com, you can find the answers to both questions.