In the nucleus of ₁₁Na²³, the number of protons, neutrons and electrons are (a) 11, 12, 0 (b) 23, 12, 11 (c) 12, 11, 0 (d) 23, 11, 12

Answer: (a). For ₁₁Na²³: Z = 11, A = 23. Protons = Z = 11, neutrons = A - Z = 12. Electrons are not in the nucleus, so 0. So the answer is (a) 11, 12, 0.

In the nucleus of ₁₁Na²³, the number of protons, neutrons and… | NEET 1991 (AIPMT)

Q43NEET 1991 · AIPMTEasy

Nucleus: Composition, Size & Nuclear Force

In the nucleus of ${}_{11}\text{Na}^{23}$ , the number of protons, neutrons and electrons are

Show answer and solution

Answer: (a)

For ${}_{11}\text{Na}^{23}$ : $Z = 11$ , $A = 23$ .
Protons $= Z = 11$ , neutrons $= A - Z = 12$ .
Electrons are not in the nucleus, so $0$ .
So the answer is (a) 11, 12, 0.

Report a mistake

More questions on Nucleus: Composition, Size & Nuclear Force

If the nuclear force between two protons, two neutrons and between proton and neutron is…NEET 1991 (AIPMT)
The nuclei ₆C¹³ and ₇N¹⁴ can be described asNEET 1990 (AIPMT)
The ratio of the radii of the nuclei ₁₃Al²⁷ and ₅₂Te¹²⁵ approximatelyNEET 1990 (AIPMT)
Which of the following statements is true for nuclear forces?NEET 1990 (AIPMT)
Which of the following pair of nuclei are isobars of the element?JEE Main 2026 (23 Jan, Shift 2)
Four statements are given ( A is mass number): A. The volume of a nucleus is proportional…NEET 2026
A nucleus has mass number α and radius Rα. Another nucleus has mass number β and radius…JEE Main 2026 (28 Jan, Shift 2)
The ratio of the density of oxygen nucleus (₈¹⁶O) and helium nucleus (₂⁴He) isMHT CET 2026 (16 Apr, Shift 2)

Nucleus: Composition, Size & Nuclear Force question from NEET 1991 (AIPMT)

More questions on Nucleus: Composition, Size & Nuclear Force