elements from A to E have in them the distribution of electrons,protonsand netron as follows

element  electrons  neutrons  protons

A  4  4  3

 

B  8  9  9

C  18  22  18

D 17  20  17

E  17  18  17

MAKING USE OF THIS DATA FIND  CATION, ANION, A PAIR OF ISOTOPES, AN ATOM OF NOBLE GAS

THIS QUESTION IS THERE IN MY ASSIGNMENT WHICH I HAVE TO SUBMIT ON MONDAY PLEASE ANSWER IT AS FAST AS POSSIBLE PLEASE

 

Hi.......

cation - B

anion - A

Pair of isotopes - D and E

An atom of noble gas - C

A

atomic no.-3

atomic mass-7

atomic charge-1+

B

atomic no.-9

atomic mass-18

atomic charge-1-

C

atomic no.-18

atomic mass-40

atomic charge- no valency so no charge its stable.

D

atomic no.-17

atomic mass-37

atomic charge-1-

E

atomic no.-17

atomic mass-35

atomic charge-1-

therefore:-

  cation - A (it contain positive charge)

  anion- B, D, E (they contain negative charge)

  pair of isotope- D and E (both contain same atomic number and different mass number)

  an atom of noble gas- C (c is stable means its shells contain a fixed amaunt of electrons, an atom

  which is stable means it its a noble gas)