Question

Read the following paragraph carefully and answer all the questions accordingly.


An atom has a neutral charge and an equal number of protons and electrons. Electronsarrange themselves in layers or rings called “shells.” One shell holds up to 8 electrons.

An atom can have many shells, depending on how many electrons it has. Shells always

fill up all the way to 8 before adding a new shell. The outermost shell may have fewer

than 8 electrons. The electrons in the outermost shell are known as valence electrons.

Sometimes (such as during bonding), these valence electrons jump and attach to

another atom. If an atom gains or losses electrons, its charge changes and it does not

remain neutral. The atom is then known as an ion.

If an atom loses electrons, its charge becomes positive and it’s called a cation.

If an atom gains electron, its charge becomes negative and it’s called an anion.



• The atomic numbers of six elements A, B, C, D, E and F are given below:

Elements B C D E F

Atomic Number 19 18 13 12 16

(a) Which atom will form an ion having 1-unit positive charge?

(b) Which atom will not form an ion?

(c) Name the atomic species which contains 11 protons, 10 electrons and 12 neutrons.​

Answer 1

Answer:

b ) which atom will not an ion