Atoms and molecules

Question 1

What is the relative atomic mass?

Answer 1

The number of protons and neutrons

Question 2

Group down or right

Period down or right

Answer 2

Group down

Period right

Question 3

Relative atomic mass of protons, neutrons and electrons

Answer 3

P 1
N 1
E 1/1836

Question 4

What is the outermost shell in the electronic structure known as?

Answer 4

The valence shell

Question 5

Why is an atom electrically neutral?

Answer 5

Atom is neutral because atoms have the same number of protons and electrons.(1-1=0)
P 1
N 0
E -1

Question 6

What are isotopes?

Answer 6

Isotopes are atoms of the same element with the same number of protons and electrons but different number of neutrons.(Proton number is same=Same element)

Question 7

How do you find the period number?

Answer 7

Number of electron shells

Question 8

How do you find the group number?

Answer 8

Number of electrons in valence shell

Question 9

Ammonia chemical formula

Answer 9

NH3

Question 10

Carbon monoxide formula

Answer 10

CO