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प्रश्न
Select the correct answer from the options given below.
Is the group number of the element whose atomic number is 4.
विकल्प
group – 1
group – 2
group – 18
उत्तर
group – 2
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संबंधित प्रश्न
An element 'X' belong to 3rd period and group 13 of the Modern Periodic Table.
(a) Determine the valence electrons and the valency of 'X'.
(b) Molecular formula of the compound formed when 'X' reacts with an element 'Y' (atomic number = 8).
(c) Write the name and formula of the compound formed when 'X' combines with chlorine
How many groups and periods are there in the modern periodic table?
The metal of Group 2 from top to bottom arc Be, Mg, Ca, Sr, and Ba.
1) Which one of these elements will form ions most readily and why?
2) State the common feature in the electronic configuration of all these elements.
How does the number of valence electrons vary on moving from left or right in the second period of the periodic table?
Correct the statements.
Elements in the same periods have equal valency.
An element Z has atomic number 16. Answer the following
(a) State the period and group to which Z belongs
(b) Is Z a metal or a non-metal?
(c) State the formula between Z and hydrogen.
(d) what kind of a compund is this?
Arrange the following as per instruction given in the bracket.
Mg, Cl, Na, S, Si (decreasing order of atomic size)
The electronic configuration of an element is 2, 8, 4. State it:
group and period in the Modern Periodic Table.
Select the correct answer from the options given below.
It is a metal in period 2 having electronic configuration 2, 1?
Which of the following would weigh the least?
(Atomic masses C = 12, 0 = 16, Na = 23)
