Advertisements
Advertisements
प्रश्न
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
उत्तर
- 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
संबंधित प्रश्न
What are the atomic numbers of elements whose outermost electrons is represented by 2p3.
Multiple Choice Questions
If the atomic number of an atom is 17 and mass number is 35 then number of neutron will be
The atomic number and the mass number of sodium are 11 and 23 respectively. What information is conveyed by this statement.
The atom of an element X has 7 electrons in its M shell.
What is the atomic number of element X?
Define the following form:
Atomic number
The atom of an element is made up of 4 protons, 5 neutrons and 4 electrons. What are its atomic number and mass number?
Define the term ‘atomic number’ of an atom.
‘Valency is the number of hydrogen atoms which can combine with [or displace] one atom of the element [or radical] forming a compound’. With reference to the above definition of valency, state the valency of chlorine in hydrogen chloride, giving reasons.
What is mass number of an atom?
If an atom has 6 electrons in its outermost shell, it is inert.
