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प्रश्न
Write the name.
Two elements having two orbits.
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उत्तर
Two elements having two orbits- Carbon (C), oxygen (O)
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संबंधित प्रश्न
Give the trend in metallic character:
down the group top to bottom.
Explain the following:
Metallic character of elements decreases from left to right in a period while it increases in moving down a group.
An element barium has atomic number 56. Look up its position in the periodic table and answer the following question.
Is it a metal or a non-metal?
In Period 3, the most metallic element is ______.
Study the extract of the Periodic Table given below and answer the questions that follow. Give the alphabet corresponding to the element in question. DO NOT repeat an element. 
Which non-metallic element has the valency of 2?
If an element is in group 7 is it likely to be metallic or non metallic in character?
Supply the missing word from the words given in brackets.
If an element has one electron in its outermost energy level, then it is likely to be _ (metallic, non metallic)
The tendency of an element to form cation is the _______ character of that element.
The tendency of an element to form anion is the ______ character of that element.
Silicon is a metallic element.
Write scientific reason.
The non-metallic character increases while going from left to right in a period.
Which of the following set of elements is written in order of their increasing metallic character?
The lightest liquid metal is ______
Which of the following sets of atomic numbers belong to that of alkali metals?
Identify the elements with the following property and arrange them in increasing order of their reactivity
- An element which is a soft and reactive metal
- The metal which is an important constituent of limestone
- The metal which exists in liquid state at room temperature
Arrange the following as per instruction given in the bracket.
Cs, Na, Li, K, Rb (increasing metallic character)
Metals are good ______ because they are electron ______.
The given table shows elements with the same number of electrons in its valence shell.
| Elements | A | B | C |
| m.p. | 63.0 | 180.0 | 97.0 |
Arrange them in order of increasing metallic character.
