Chemistry
In the table below, H does not represent hydrogen. Some elements are given in their own symbol and position in the periodic table while others are shown with a letter.
| 1A 1 | IIA 2 | IIIA 13 | IVA 14 | VA 15 | VIA 16 | VIIA 17 | O 18 |
|---|---|---|---|---|---|---|---|
| Li | D | O | J | Ne | |||
| A | Mg | E | Si | H | K | ||
| B | C | F | G | L |
Answer the following questions.
Identify the most electronegative element.
Identify the most reactive element of group IA or 1.
Identify the element from period 3 with the smallest atomic size.
Identify the element with the highest ionization potential.
How many valence electrons are present in G ?
Which element from group 2 will have the least ionization energy ?
Identify the noble gas of the fourth period.
In the compound between A and H, what type of bond is formed ? Give its molecular formula.
Periodic Table
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Answer
J is the most electronegative element.
B is the most reactive element of group IA or 1.
K is the element from period 3 with smallest atomic size.
Ne the highest ionization potential.
5 valence electrons present in G.
C is the element from group 2 which has least ionization energy.
L is the noble gas of the fourth period.
ionic bond is formed between A and H.
The molecular formula is :
2A + H ⟶ A2H
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Related Questions
The elements of one short period of the Periodic Table are given below in order from left to right :
Li Be B C O F Ne
(a) To which period do these elements belong ?
(b) One element of this period is missing. Which is the missing element and where should it be placed ?
(c) Place the three elements fluorine, beryllium and nitrogen in the order of increasing electronegativity.
(d) Which one of the above elements belongs to the halogen series ?
The atomic number of an element Z is 16. State
(a) the period to which it belongs.
(b) the number of valence electron(s) in the element.
(c) whether the element is a metal or a non-metal.
(d) State the formula of the compound between Z and hydrogen.
M is a metal and its oxide has the formula M2O. This oxide when dissolved in water forms the corresponding hydroxide which is a good conductor of electricity. In the above context, answer the following :
(i) State the number of electrons in the outermost shell of M ?
(ii) Name the group to which M belongs.
(iii) which element has more electronegativity, M or O?
The metals of Group 2 in the periodic table from top to bottom are — Be, Mg, Ca, Sr, and Ba.
(i) Which one of these elements will form ions most readily and why?
(ii) State the common feature in the electronic configuration of all these given elements.