Element: Boron
Symbol: B
So answer is B
No, since they are the strongest type of ray only elements that are dense can block them.
Answer:
I just did it home slice the first one's Ag+ and Zn2+ and the second one is A
Explanation:
I just did the assignment
When oxygen and hydrogen combine they form a polar covalent bond
Arsenic, I believe. Metalloids fall in between metals and nonmetals (usually on the bold line separating the two on the periodic table). And since the metalloid in question has four electron shells and five valence electrons in the outermost shell, you can see that this element is arsenic