Statement 1: Atomic number of sodium is 11.
Statement 2: Number of neutrons present in a neutral atom represents its atomic number.
Choose the correct option from the following regarding these statements.

Only statement 1 is true

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Only statement 2 is true

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Both statements are true

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Both statements are false

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C Both statements are true
Atomic number represents the number of protons in a neutral atom. The atomic number of sodium is 11, which means that sodium has 11 protons and 11 electrons.
Hydrogen does not have a neutron but its atomic number is 1 since it has only one proton.
Hence, statement 1 is true and statement 2 is false.

Suggest Corrections

Similar questions

Consider the following statements:

1. The number of protons in the nucleus of an atom of a given element is called the atomic number of that element.

2. Mass number of an atom is defined as the sum of number of protons and neutrons present in the nucleus of an atom.

3. Atoms of an element that have the same atomic number (Z) but different mass number (A) are called isotopes.

Which of the above statements is incorrectly stated?

Which of the following statements is/ are correct about neutral elements?

(i) Atomic number = number of protons = number of electrons
(ii) Mass number = number of protons + number of neutrons
(iii) Atomic number = number of protons + number of electrons
(iv) Mass number = number of neutrons = number of electrons

Statement 1: Elements having same atomic number cannot have different mass numbers.
Statement 2: Atomic number depends on the number of neutrons.

An atom of sodium has an atomic number of 11 and a mass number of 23. Which of the following statements is correct?

Statement 1: Number of neutrons is always greater than or equal to the number of protons in any given atom except hydrogen.
Statement 2: Number of electrons is always equal to the number of protons in a neutral atom.

Join BYJU'S Learning Program

Statement 1: Atomic number of sodium is 11. Statement 2: Number of neutrons present in a neutral atom represents its atomic number. Choose the correct option from the following regarding these statements.

Statement 1: Atomic number of sodium is 11.
Statement 2: Number of neutrons present in a neutral atom represents its atomic number.
Choose the correct option from the following regarding these statements.