Question

a) observe the given diagram carefully and answer the following questions.

(i) state the number of subatomic particles which are positively charged.
(ii) why does the element form an anion.
(iii) what is the valency of the given element.
(iv) what is the mass number of the element.​

Answer 1

Answer:

(i) 9

(ii) No,It will form Flourine Ion.

(iii) 9

(iv) 18.998403u

Explanation:

(ii) Because a fluorine atom has 9 protons and 9 electrons, so it is electrically neutral. If a fluorine atom gains an electron, it becomes a fluoride ion with an electric charge of -1

Answer 2

Answer:

1.13

2.coz a metal loses electron,and the non-metal gains the electron.

3.+3

4.24