Advertisements
Advertisements
Question
Name the element which is in seventeenth group and second period.
Solution
Fluorine (F) is the element which is in the seventeenth group and the second period.
APPEARS IN
RELATED QUESTIONS
Calculate the number of gram atoms in 4.6 grams of sodium (Na = 23)
An element X belongs to group 2 and another element Y belongs to group 15 of the periodic table:
(a) What is the number of valence electron in X?
(b) What is the valency of X?
(c) What is the number of valence electrons in Y?
(d) What is the valency of Y?
Explain how you have arrived at your answers.
For each of the following triads, name the element with the characteristics specified below:
Elements | Least atomic radius | Chemically least reactive |
(i) F, Cl, Br (ii) Li, Na, K |
.................... .................... |
.................... .................... |
In terms of electronic configurations, explain the variation in the size of the atoms of the elements belonging to the same period and same group ?
Which of the following element does not lose an electron easily?
(a) Na
(b) F
(c) Mg
(d) Al
An element X belong to 4th period and 17th group, state.
Write the formula of the compound formed when it reacts with `(27)/(13) y `
Name the element in period 3 which does not form oxide.
Atomic number of metal ‚A‛ is 11, while atomic number of metal ‚B‛ is 20. Which of them will be more reactive? Write the chemical reaction of dilute HCl with metal ‚A‛.
What is meant by periodicity of elements?
Give the number of the group and the period of elements having three shells with three electrons in valence shell.