Advertisements
Advertisements
Question
What is common salt? Name the elements present in it. Write the formula of common salt. What are the atomic number and the mass number of the elements? Write the ions in the compound.
Advertisements
Solution
- Common salt is mostly sodium chloride. The ionic compound with the formula NaCl, representing equal proportions of sodium and chlorine.
- Elements present is common salt: Sodium & Chlorine.
- Formula of common salt: NaCl Atomic number and mass number of NaCl:
Atomic number of Na = 1 Atomic number of Cl = 17 Mass number of Na = 23
Mass number of Cl = 35 - Ions present in the compound :
Sodium ion Na+ and Chloride ion Cl
APPEARS IN
RELATED QUESTIONS
What are the atomic numbers of elements whose outermost electrons is represented by 3p5?
In Milikan’s experiment, static electric charge on the oil drops has been obtained by shining X-rays. If the static electric charge on the oil drop is - 1.282 × 10-18C, calculate the number of electrons present on it.
Name the particles which actually determine the mass of an atom.
Fill in the blanks- The number of protons in the nucleus of an atom is called its ....................
(a) Which of the nuclear particles is present in the same fixed number in the atoms of any particular element?
(b) What do we call this number which is characteristic of a particular element?
The mass number of an element is 18. It contains 7 electrons. What is the number of protons and neutrons in it? What is the atomic number of the element?
Draw the orbital diagram of `""_20^40"Ca"^(2+)` ion and state the number of three fundamental particles present in it.
Differentiate mass number from atomic number.
The elementary particles such as protons and neutrons are collectively called ______.
If M is the atomic mass and A is the mass number, then packing fraction is given by ______.
