Question

Form the symbol ^40↓18Ar,write down the number of neutron in the nucleus of the atom and also find the number of electrons, protons and it's valency​

Answer 1

Hey!!!

Answer:

Argon ⁴⁰₁₈Ar

Neutrons=40–18=22neutrons

Electrons=18 electrons

Protons=18 protons

Valency=0

as, K(2), L(8), M(8)

I hope it helps

Answer 2

Given,

The symbol = ^40↓18Ar

To find,

The number of neutrons in the nucleus of the atom.

The number of electrons in the nucleus of the atom.

The number of protons in the nucleus of the atom.

The valency of the Atom.

Solution,

We can interpret from the symbol given that 40 is the atomic mass of argon and 18 is the atomic number.

Here, The atomic number is the number of electrons or protons.

Therefore, The number of electrons in the nucleus of the atom is 18 as well as the number of protons in the nucleus of the atom.

For the number of neutrons, we subtract atomic number from atomic mass since atomic mass is the total sum of neutrons plus the number of protons. So. 40 - 18 = 22 is the number of neutrons present in Argon.

The valency of Argon is 0 since it is a noble gas with no unpaired electrons.

Hence, the numbers of neutrons, electrons, protons, and its valency are 22, 18, 18, 0.