How many moles of lithium are in a 2.00mL sample of a homogenous solution with a concentration of 500.0g of lithium per liter

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.

1. a)c-14 has two more protons

2. d)they have different numbers of protons, neutrons, and valence electrons; they are all gases at room temperature.

3. c) iron and nickel.

c. orbital shape i hope this is correct