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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
Arrange the following as per the instruction given in the bracket.
Cs, Na, Li, K, Rb (increasing order of metallic character).
Arrange the following as per the instructions given in the brackets:
Na, K, Cl, S, Si (increasing order ionization energy)
Answer the following in respect of element `31/15 P `
What is its valency?
Name any five periods properties.
Give the trend in metallic character:
down the group top to bottom.
An element X belong to 3rd periods and group II of the periodic table state:
whether it is a metal or a non-metal.
Arrange the elements of group 17 and group 1 according to the given conditions.
Increasing non – metallic character
The elements at the bottom of a group would be expected to show ______ metallic character than the element at the top.
Explain why the following statement is not correct:
All groups contain metals and non metals.
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?
Among the elements of the second period, Li to Ne, pick out the element that is the most reactive metal
For the main group of the periodic table, the metallic properties of the elements vary approximately with their position as shown in the table.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| H | He | ||||||
| A | B | ||||||
| C | D |
Will the most non-metallic element be found at A,B,C or D ?
Select the correct answer
Which of the following electronic structure is of a metal?
Copy and complete the following sentence choosing the correct word or words from those given below, at the end of the sentence:
The element at the bottom of a group would be expected to show ______ metallic character than the element at the top.
Match the atomic number with the following:
A metal of valency one.
The tendency of an element to form anion is the ______ character of that element.
Which of the following set of elements is written in order of their increasing metallic character?
An element has atomic number 17. To which group, the period does it belong? It is metal or non-metal?
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
A group of elements in the periodic table is given below (Boron is the first member of the group and Thallium is the last).
Boron, Aluminium, Gallium, Indium, Thallium
Answer the following question in relation to the above group of elements:
Will the elements in the group to the right of this boron group be more metallic or less metallic in character? Justify your answer.
