atomic structure

Question 1

what is the proton relative charge

Answer 1

+1

Question 2

what is the neutron relative charge

Answer 2

0

Question 3

what is the electron relative charge

Answer 3

-1

Question 4

what is the proton relative mass

Answer 4

1

Question 5

what is the neutron relative mass

Answer 5

1

Question 6

what is the electron relative mass

Answer 6

1/1840

Question 7

why is an atom said to be ‘electrically neutral’

Answer 7

as it contains an equal no. of protons and electrons

Question 8

what is the mass number

Answer 8

total no. of protons and neutron

Question 9

define isotopes

Answer 9

are atoms of the same element with the same no. of proton and electron but different number of neutron

Question 10

what is a valance shell

Answer 10

the one furthest away from the chemical symbol

Question 11

what is valance electrons

Answer 11

electrons in the outermost shell