Answer is <span>8.422
L.
The solving method as the attached pdf.</span>
They discovered that *elements* show increase in atomic numbers across the period.
There are 1.51x10^24 atomsU in 2.50 mol of Uranium.
This is because a mole consists of 6.02x10^24 atoms. SO with this info,
2.5 x 6.02 x 10 = 1.505 x 10^24
but because we must round, the answer is 1.51 x 10^24
*mic drop*
XD silliness aside, I hope this helped!
The answer is A. It is an alkyn. There is a triple bond
The s sublevel has just one orbital, so can contain 2 electrons max. The p sublevel has 3 orbitals, so can contain 6 electrons max. The d sublevel has 5 orbitals, so can contain 10 electrons max. And the 4 sublevel has 7 orbitals, so can contain 14 electrons max.
