Electron configuration and nuclear chemistry

Question 1

According to Bohr, electrons cannot reside at ____ in the figurebelow.

Accepted Answer

C

Question 2

According to the quantum theory of an atom, in an orbital

Accepted Answer

an electrons's position cannot be known precisely

Question 3

14. An electron for which n = 4 has more ____ than an electronfor which n = 2.

Accepted Answer

energy

Question 4

Which of the following is the same as a beta particle?

Accepted Answer

electron

Question 5

How many energy sublevels are in the second principal energylevel?

Accepted Answer

2

Question 6

Why should a radioactivetracer used detect diseases in internalorgans emit βparticles or γrays?

Accepted Answer

α particles can't travel through several m of body tissue

Question 7

What is the change in atomic number when an atom emits a beta particle?

Accepted Answer

increases by 1

Question 8

What has the same mass as an -but +charge and emitted from the nucleus duringradioactive decay?

Accepted Answer

positron

Question 9

Accordingto Heisenberg uncertainty principle if the position of a tiny moving particle is known

Accepted Answer

the charge of the particle cannot be exactly determined

Question 10

The major difference between a 1s orbital and a 2s orbital is that

Accepted Answer

the 2s orbital is at a higher energy level.

Question 11

What particle is needed to complete the following equation?

Accepted Answer

10n

Question 12

The number of orbitals for the d sublevel is

Accepted Answer

5

Question 13

The p orbitals are shaped like

Accepted Answer

dumbbells

Question 14

Reactions that affect thenucleus of an atom are called

Accepted Answer

nuclear reactions

Question 15

The Pauli exclusionprinciple states that no two electrons in the same atom can

Accepted Answer

have the same set of quantum numbers

Question 16

The Bohr model of the atom was an attempt to explain hydrogen&#x27;s

Accepted Answer

line-emission spectrum

Question 17

what particle is emitted in alpha radiation?

Accepted Answer

helium nucleus

Question 18

A decay series ends with

Accepted Answer

a stable nuclide

Questions 18