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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 instructions given in the brackets:
Cl, F, Br, I (increasing order of electron affinity)
Give the trend in metallic character:
down the group top to bottom.
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?
How do the following change on moving from left to right in a period of the periodic table?
Give examples in support of your answer.
Nature of oxides of the elements ?
How does the chemical reactivity of
alkali metals vary?
The electronic configuration of an element T is 2, 8, 8, 1.
Is it a metal or a non-metal?
The elements at the bottom of a group would be expected to show ______ metallic character than the element at the top.
Choose the correct answer.
An alkaline earth metal
(i) Lead
(ii) potassium
(iii) calcium
(iv) Copper
iii) Observe the figure and answer the following questions.
a) Identify the block shown by box A and write an electronic configuration of any one element of this block.
b) Identify the block of element denoted by letter B and write its period number.
Mg2+, Cu2+, Na1+, H1+ (In the order of preferential discharge at the cathode)
State whether the following statement is true or false
All members of zero group are non metals.
Explain
Larger the atomic size, more metallic is the element.
Select the correct answer
Configuration of an element is 2, 8, 1. Which of the following statement is true?
If an element is in group 7 is it likely to be metallic or non metallic in character?
A group of elements in the periodic table is given below (Boron is the first member of the group and Thallium is the last). Answer the following question in relation to the given group of elements:
Which element has the most metallic character?
Refering to changes in the properties of elements on moving from left to right across a period of the periodic table. Choose the correct answer.
The non-metallic character of the elements :
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 ______
