Advertisements
Advertisements
प्रश्न
Draw the atomic diagram of the following element showing the distribution of – protons, neutrons and the electrons in the various shell of the atom.
Calcium – \[\ce{^40_20Ca}\]
[The upper number represent the – mass number and the lower number represent the – atomic number e.g. calcium – mass number = 40, atomic number = 20]
Advertisements
उत्तर
Calcium – \[\ce{^40_20Ca}\]
Atomic number Z = p = e = 20
Mass number A = p + n
40 = 20 + n
∴ n = 40 − 20 = 20
Ca
15 = 2, 8, 8, 2
(K, L, M, N)
APPEARS IN
संबंधित प्रश्न
Multiple Choice Questions
If the atomic number of an atom is 17 and mass number is 35 then number of neutron will be
State the mass number, the atomic number, number of neutrons and electronic configuration of the following atoms.
`""^12""_6C, ""^16""_8O, ""^19""_9F, ""^20""_10Ne, ""_13""Al""^27, ""_17""Cl""^35`
Also, draw atomic diagrams for them.
TRUE \ FALSE
After the emission of a beta-particle, the atomic number of the atom increases by one.
Fill in the blanks- The number of protons in the nucleus of an atom is called its ....................
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?
From the symbol `""_15^31"P"`, state :
(i) mass number of phosphorus,
(ii) atomic number of phosphorus, and
(iii) electron configuration of phosphorus.
The properties of the elements are a periodic function of their __________.
Define the term ‘atomic number’ of an atom.
Define the term of atomic number.
‘A’ is denoted by ______.
