How many electrons and neutrons are there in an atom of mass number A and atomic number Z?

Define mass number of an atom?

There are 11 electrons and 12 neutrons In an atom. Find out the atomic number and mass number.

How many electrons are there in the outermost shell of sodium atom?

A neutral atom possesses 92 protons and 146 neutrons. Find its atomic number, mass number and number of electrons present in it.

In a radioactive series a nucleus X distintegrates into nucleus Y by emitting two alpha and two beta particles. IF m and n are the mass number and atomic number of the nucleus X, then the mass number and atomic number of the nucleus Y respectively are

Nucleus of an atom has 6 protons and 8 neutrons. What is its atomic number and mass number? What is this element?

How many electrons in an atom may have the following quantum numbers? N = 3, l = 0

If an isotope of hydrogen has two neutrons in its atom, its atomic number and atomic mass number will respectively be : 2 and 1, 3 and 1, 1 and 1, 1 and 3

How many electrons are present in the M-shell of an element with atomic number 20? A) 8 B) 6 C) 18 D) 2