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Flashcards in Stuff I should have known Deck (24)
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1

what is isoelectronic?

Having the same number of electrons or the same electron configuration

2

What is deuterium?

An isotope of hydrogen

3

In effecting nuclear charges by bombarding target nuclei with positively charged alpha particles, it is necessary to accelerate these particles to high speed because it is necessary to...

Overcome the force of repulsion of the nucleus

4

What significant information about atomic structure came from the Millikan experiment using charged oil drops?

The magnitude of the charge of an electron

5

The existence of discrete/quantized energy levels in an atom may be inferred from...

atomic line spectra

6

What emission line occurs at the highest frequency?

The lowest drop... ie 3 to 1

7

When an atom of an electropositive atom becomes an ion, it...

"Does none of these"

8

What is different between sigma bonds and hybridization?

Sigma bonding occurs between already hybridized atoms... two hybrid bonds crossing. Hybridization is the initial formation of the hybrid orbital

9

An octehedral atom with 2 isometric forms indicates ____ geometry

Square planar

10

What effects the vapor pressure of a liquid?

The temperature

11

A gas or vapor may only be liquified only at temperatures...

at or below the critical temperature

12

What is the number of nearest-neighbors in a body-centered cubic lattice?

8

13

What is enthalpy?

The total energy in a system

14

When is the calculation reactants-products?

Bond energies or enthalpies of combustion

15

When is a reaction more exothermic?

When its delta H0 is more negative

16

What is the photoelectric effect formula?

KE=hf-hf(threshold)

17

Simple Cubic edge

2r

18

Body-centered edge

4r/sqrt(3)

19

Face-centered cubic edge

2sqrt(2)r

20

What is the distance between layers?

n(given)wavelength/2sin(theta)

21

What does a steeper incline mean?

More endothermic

22

What is the pressure of a solution?

It's vapor pressure time the mole fraction

23

What is the vapor pressure lowering of a solution?

The regular pressure minus the vapor pressure

24

What is the change in freezing/boiling point?

molalityXvan't hoff factorXKf