Question

The table shows the structure of several particles.
Particle
Electrons
Protons
Neutrons
A
12
12
12
B
12
12
14
С
10
12
12
D
10
8
8 9
E
9
20
i. Which three particles are neutral atoms?
ii. Which particle is a negative ion? What is the charge on this ion?
iii. Which particle is a positive ion? What is the charge on this ion?
iv. Use the periodic table to identify particle A.​

Answer 1

Answer:

i) A

ii) D 2-

iii) C 2+

iv) Mg

Explanation:

A is neutral as the number of electrons and protons is same.

D is negative ion as it has 2 more electrons than protons. so the charge is 2-

C is positive ion as the number of electronic is less than number of protons. so the charge is 2+

magnesium is the element with atomic number 12.