Question

Isotopes are the stoms of the same element with same atomic number but different mass
sumber. Isotopes of same element have samne chems al properties due to same number of
electrons. Atomic number of an atom is the number of electrons / protons in it and mass
number is the sum of protons and neutrons
170)
Hydrogen has 3 isotopes 11 D and T. Number of electrons and neutrons in T will be
(A)3,1
(C) 1,0
(D) 2.1
17 (ii)
Isotope of lodine is used to treat
(A) Leg pain
(B) Cold and cough
(C) Goitre
(D) Cancer
17 (lit) H and D isotopes of hydrogen form H20 and D20 with oxygen. Which of the following you
think right for the above observation
(A)H and D have same number of protons
(B) H and D have same no. Of neutrons
(C) A and D have same no. Of electrons
(D) H and D have same mass number.
17 (in
Two isotopes of Uranium have 92 electrons each and have 144, 148 neutrons respectively.
Mass numbers of these two isotopes will be respectively
(A) 237,236
(B) 236 237
(C) 236 238
(D) 238,236
Isotopes of same element have
(A) Same no. of neutrons
(B) Same physical properties
(C) Different chemical properties
(D) Different no. Of neutrons.
​

Answer 1

Answer:

a

c

c

Explanation:

rigHT ans h brain list dedo or fllw bbi

Answer 2

Answer:

(i), (iii), (iv) only ans