Electrons

Question 1

How many orbitals in the first 3 energy levels?

Answer 1

1 - 1s = total 2 electrons

2 - 1s 3p = total 8 electrons

3 - 1s 3p 5d = total 18 2 electrons in each orbital

Question 2

What are the shape of the each orbital?

Answer 2

s - spherical p - DOUBLE LOBED (figure of 8) d - clover leaf - 4 lobes

Question 3

What is Schrodinger’s theory of quantum mechanics?

Answer 3

mathematically equation that describes the atom the solutions to this equation give the probability of finding an electron in a given volume of space called an atomic orbital

Question 4

What does the shape of the orbital represent?

Answer 4

the volume of space in which there is a 95% probability of finding an electron they also influence the shape of molecules each orbital has a slightly different energy

Question 5

What is the Aufbau principle?

Answer 5

electrons fill from lowest energy to the highest

Question 6

what is the Pauli exclusion principle?

Answer 6

each orbital hold a maximum of 2 electrons, 1 spins up, 1 spins down

Question 7

What is Hund’s rule?

Answer 7

put one electron in each orbital of that energy before pairing them up

Question 8

What orbital has s got a lower energy than?

Answer 8

d

Question 9

What is the difference between ¹⁸²W and ¹⁸⁶W?

Answer 9

they have the same number of electrons so they have the same chemical properties.

Question 10

How many lone pairs of electrons are present in the hydroxide ion?

Answer 10

3