Question

the atomic number and the mass number of an element are 26,56 respectively. calculate the number of an element, protons and neutrons in its atom. draw the structure​

Answer 1

Answer:

Atomic number A = 26

Mass number A = 56

No. of Protons P = ?

No. of Electrons = ?

No. of Neutrons N = ?

Name of the element is Iron (Fe)

No. of proton (P) = 26

Mass number A = n+p

56 = n = 26

n = 56-26

∴ No. of neutrons n = 30

In an element No. of protons and No. of electrons is equal.

∴No of electrons = no. of protons

= 26

Structure of Iron:

Answer 2

Answer: Number of the element is 26, number of protons is 26, number of neutrons is 30

Explanation:

Given:

Atomic Number - 26

Atomic mass number - 56

Solution:

Atomic number is the number of protons present in the nucleus of an atom. Therefore protons present in the nucleus of an iron atom is 26.

Atomic mass number is sum of protons and neutrons present in the nucleus of an atom. Therefore neutrons present in the atom = atomic mass number - atomic number(protons) = 56-26 = 30.