Answer:
(A) 2.7*10^-8, (B)3.56*10^2, (C)4.78*10^4 (D) 9.6*10^-2
Explanation:
Scientific notation is a system that allows you to express very large or very small numbers by multiplying them by multiples of 10 with positive or negative exponents
Answer:
Hydrogen Gas is the free element
Potassium (K), Sodium(Na), Iron(Fe), Copper(Cu), Silver(Ag), Tin(Sn), Antimony(Sb), Tungsten(W), Gold(Au), Mercury(Hg), Lead(Pb)
<span>The neutral atom chlorine
has an atomic number of 17 therefore it also contains a total of 17 electrons. We
can write its ground state electronic configuration as 1s<span>2 </span>2s<span>2 </span>2p<span>6 </span>3s<span>2 </span>3p5</span>
Additional
info we can get here is that since the last one is <span>3p5 therefore its valence electron is 5.</span>