Advertisements
Advertisements
Question
What is the number of valence electrons in the atoms of first elements in a period?
Solution
The number of valence electrons in the atoms of first elements in a period is 1.
APPEARS IN
RELATED QUESTIONS
The position of three elements A, B and C in the Periodic Table are shown below –
|
Group 16
|
Group 17
|
|
−
|
−
|
|
−
|
A
|
|
−
|
−
|
|
B
|
C
|
(a) State whether A is a metal or non-metal.
(b) State whether C is more reactive or less reactive than A.
(c) Will C be larger or smaller in size than B?
(d) Which type of ion, cation or anion, will be formed by element A?
How were the positions of isotopes of an element decided in the modern periodic table?
On which side of the periodic table will you find non-metals?
State how the valency of elements varies in a group of the periodic table?
What do you understand by typical elements?
Give the symbol and valency of the following element and radical.
Bisulphite
Which of the following statements about the Modern periodic table is correct?
An X element with atomic number 11 and Y element with atomic number 13 belongs to the third period in the modern periodic table. With this information, give the answers of the below questions.
- Which element has more metallic character from these two elements?
- What is the valency of each X and Y elements?
- Atom size of Y element is smaller than atom size of X element. Explain.
The element which has the least tendency to lose electrons is ______
An element has 2 electrons in its N shell.
Is it a metal or a non-metal?
