Advertisements
Advertisements
Question
Correct the statement.
Transition elements are placed at extreme right of the periodic table.
Solution
Inert gases are placed at the extreme right of the periodic table.
RELATED QUESTIONS
State modern periodic law.
What is meant by a period, in a periodic table?
The atomic particle whose number in the atoms of an element always remains the same and which forms the real basis for the modern classification of elements is:
(a) electron
(b) proton
(c) neutron
(d) meson
State the term
The tabular arrangement of elements in horizontal rows and vertical columns _________
Name two elements in each case:
Transition element
Name the type of elements which have one electron short of octet.
In the Modern Periodic Table – atoms of all elements are arranged according to their increasing order of – atomic numbers. An atom of nitrogen has seven protons and seven electrons. State what would be its atomic number.
Give the symbol and valency of the following element and radical.
Oxygen [Oxide]
A part of modern periodic table is given below. On its basis, answer the following questions:
| Group No. → | 1 | 2 | 13 | 14 | 15 | 16 | 17 | 18 |
| Period ↓ | ||||||||
| 2 | A | B | ||||||
| 3 | E | D | F | C |
Write the molecular formula of the compound formed by the combination:
E and B
Name the metalloids in the first twenty elements.
