Advertisements
Advertisements
प्रश्न
Right or wrong sentence.
To the left of the zig-zag line in the periodic table are the metal elements.
पर्याय
Right
Wrong
Advertisements
उत्तर
The given sentence is right.
Explanation:
- Metals: Found to the left and below the zig-zag line. They make up the vast majority of the periodic table.
- Nonmetals: Found to the right and above the line.
- The Exception: Hydrogen is located on the far left (Group 1) but is a nonmetal.
APPEARS IN
संबंधित प्रश्न
What is periodicity in properties of elements with reference to the Modern Periodic Table?
Name the scientist who first of all showed that atomic number of an element is a more fundamental property than its atomic mass.
Fill in the following blank with suitable word:
Group 17 elements are known as ...............
Fill in the following blank with suitable word:
Group 18 elements are called ...............
Give two example of group 17 elements.
The atomic numbers of four elements P, Q, R and S are 6, 8, 14 and 16 respectively. Out of these, the element known as metalloid is:
(a) P
(b) Q
(c) R
(d) S
Which element has the electronic configuration 2, 8, 2?
How would the tendency to gain electrons change on moving from left to right in a period of the periodic table?
What is the usual number of valence electrons in the atoms of the last element in a period?
How do the atomic radii of elements change as we go from left to right in a period of the periodic table?
State how the valency of elements varies in a group of the periodic table?
What are the advantages of the periodic table?
Name two elements in Alkali metals.
Name two elements in each case: Lanthanides
State its position in the periodic table?
Write the number of protons, neutrons and electronic configuration of \[\ce{_19^39K, _15^31P}\]. Also state their position in periodic table.
What is the main characteristic of the last element in each period of the periodic table?
Fill in the blank:
The horizontal rows in the periodic table are called _____________.
What is meant in the periodic table by a period?
From the standpoint of atomic structure, what determines which elements will be the first and which the last in a period of the periodic table?
Give the symbol and valency of the following element and radical.
Zinc
Give the symbol and valency of the following element and radical.
Bicarbonate
Give the symbol and valency of the following element and radical.
Bisulphate
Give the chemical formula of sodium sulphite
What are the elements.
The groups 1 and 2 constitute the ______ block.
The d-block elements are called as ______ elements.
Write an explanation.
Period
What are groups and periods in the modern periodic table?
______ and ______ are called inner transition elements.
On moving from left to right in a period in the periodic table, the size of the atom ______
Where would you locate the element with electronic configuration 2,8 in the Modern Periodic Table?
Which of the following is the outermost shell for elements of period 2?
The element with atomic number 14 is hard and forms acidic oxide and a covalent halide. To which of the following categories does the element belong?
Spot the error:
The elements of group 13 are called the carbon family.
An element has the atomic number 12.
- Write the electric configuration.
- To which group and period does it belong.
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 non-metals in the first twenty elements.
