3 Atomic Structure (P/C)

Question 1

what are the three sub atomic particles

Answer 1

Proton, Electron, Neutron

Question 2

an atom is the ___

Answer 2

smallest unit that makes up an element

Question 3

what is the mass of P, E, N

Answer 3

1 ;
1/1840 ;
1

Question 4

what is the charge of P, E, N

Answer 4

+1 ;
0 ;
-1

Question 5

what does the nucleon number represent

Answer 5

total number of P + N; atomic mass

Question 6

what does the atomic number represent

Answer 6

total number of P; proton number

Question 7

an ion is ___

Answer 7

when an atom or a group of atom gains or loses electron(s)

Question 8

isotopes are ___

Answer 8

atoms of the same element with the same proton number (number of proton) but different nucleon number (number of neutron)

Question 9

atoms of isotope have the same/different number of electrons

Answer 9

same

Question 10

where are the electrons located in the atom

Answer 10

electron shells

Question 11

what is the electronic configuration of calcium

Answer 11

2,8,8,2

Question 12

All group 18 elements has 8 valence electrons (True/False)

Answer 12

False, hydrogen has 2 valence electrons only

Question 13

atoms with valence shells that are not full are reactive/unreactive

Answer 13

reactive

Question 14

what is the P, E, N of K+ ion

Answer 14

19, 18, 20