One of the defects of Mendeleevs periodic table is that:
a. Noble gases are placed in the same g... VIDEO
One of the defects of Mendeleevs periodic table is that:https://bit.ly/YTAI_PWAP https://www.pw.live
Other Videos By PW Solutions 2023-07-15 Which of the following properties do not match with elements of halogen family?
a. Halogens cont... 2023-07-15 In modern periodic table, gold is placed in, a. s-block b. f-block c. d-block d. p-block 2023-07-15 Arrange the following atoms in the order of their increasing atomic radius:
\( \mathrm{F}, \math... 2023-07-15 The correct increasing order of atomic size is,
a. \( \mathrm{O}\mathrm{S}\mathrm{Se} \)
b. \( \... 2023-07-15 Sodium is considered to be a soft metal due to presence of
a. One electron in their outermost or... 2023-07-15 Which among the following is not true about noble gases?
a. They are non-metallic in nature
b. T... 2023-07-15 Select the set of elements which is written in the order of their increasing metallic character.... 2023-07-15 Which among the following elements A, B, C, D and \( \mathrm{E} \) with atomic number 3, 11, 15,... 2023-07-15 Symbol of tin is a. \( \mathrm{Pb} \) b. \( \mathrm{Sb} \) c. Ti d. \( \mathrm{Sn} \) 2023-07-15 On moving from left to right in a period :
a. Effective nuclear charge decreases
b. Metallic cha... 2023-07-15 One of the defects of Mendeleevs periodic table is that:
a. Noble gases are placed in the same g... 2023-07-15 The most metallic element in the fourth period is
a. \( \mathrm{Ca} \)
b. \( \mathrm{K} \)
c. \(... 2023-07-15 Which among the following gases is widely used in weather balloon?
a. Helium
b. Neon
c. Hydrogen... 2023-07-15 The atom of an element has electronic configuration \( 2,8,1 \). Which of the following elements... 2023-07-15 The Anion \( \mathrm{O}^{2-} \) is isoelectronic with
a.
\( \mathrm{F}^{+} \)
b. \( \mathrm{F}^{... 2023-07-15 The element which normally exist in the liquid state are
a. Iodine and sodium
b. Mercury and chl... 2023-07-15 Select the correct pair that have largest and smallest atoms respectively.
a. \( \mathrm{F} \) a... 2023-07-15 The atom of an element has electronic configuration \( 2,8,7 \). It would be chemically similar ... 2023-07-15 All the elements belonging to the same group have similar properties because
a. They have simila... 2023-07-15 An element \( \mathrm{Y} \) has mass number 40 and it contains 21 neutrons in its atom. It belon... 2023-07-15 The correct order of relative size?
a. \( \mathrm{I}^{-} \mathrm{I}^{+}\mathrm{I}^{-} \)
b. \( \...
0