0
What else can I help you with?
How does the valency vary on moving down the group?
The valency does not (or tends not to) vary going up and down a group. It varies going across a period.
What common feature is shared by the sodium and chloride ions?
Their valency is one. They both belongs to the third period.
How does the numbers of electrons change across a period of elements?
The number of valence electrons for the elements increases across a period, from 1 (group 1) to 8 (group 18).
How does the number of valence electrons for element change across a period?
The number of valence electrons for the elements increases across a period, from 1 (group 1) to 8 (group 18).
What happens to the properties of elements across any periodic of the table?
Across any period, the properties of elements gradually change. This gradual change is called a periodic trend.
How does the valency vary on moving down the group?
The valency does not (or tends not to) vary going up and down a group. It varies going across a period.
What common feature is shared by the sodium and chloride ions?
Their valency is one. They both belongs to the third period.
How does valency of element with respect to hydrogen vary in a period?
in a period from left to right valency of elements with respect to hydrogen increases from 1 to 4 and then decreases upto 1 and with respect to oxygen increases from 1 to 7.
What do the atoms in elements in period 3 have in common?
Three electrons in their valency orbit.
How does the atomic number change in a period?
When going left to right across a period, the atomic number of element increases.
How does electronegativity change across the period?
Electronegativity tends to increase across a period from left to right. This is because as you move across a period, the nuclear charge increases and the atomic radius decreases, leading to a stronger attraction for electrons by the nucleus.
How does the numbers of electrons change across a period of elements?
The number of valence electrons for the elements increases across a period, from 1 (group 1) to 8 (group 18).
How does the number of valence electrons for element change across a period?
The number of valence electrons for the elements increases across a period, from 1 (group 1) to 8 (group 18).
What happens to the properties of elements across any periodic of the table?
Across any period, the properties of elements gradually change. This gradual change is called a periodic trend.
Does the valency of hydrogen change?
Possible valencies: +1, 0, -1.
What is mean by valency?
Variable valencies are the valencies which can change e.g. Fe (iron) can either have the valency of 2 (Fe II) or 3 (Fe III)
How do the number of electrons change across the period of elements?
they get more electrons the farther right the get
