Which element is alone in its own family?
Hydrogen
What is a family of elements called?
The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. All the members of a family of elements have the same number of valence electrons and similar chemical properties.
Which two elements are in the same period?
Elements that are in the same period have chemical properties that are not all that similar. Consider the first two members of period 3: sodium (Na) and magnesium (Mg). In reactions, they both tend to lose electrons (after all, they are metals), but sodium loses one electron, while magnesium loses two.
What element in Period 2 has the most mass?
element neon
Is a period having elements from atomic number 11 to 18?
Answer. Answer: magnesium Aluminium silicon phorophorus chlorine argon suplhure.
What are the Valency of first 40 elements?
Valency Chart of Elements (first thirty)
| Element | Atomic Number | Valency |
|---|---|---|
| Carbon | 6 | 4 |
| Nitrogen | 7 | 3 |
| Oxygen | 8 | 2 |
| Fluorine | 9 | 1 |
Which element is a metal with Valency 2?
Magnesium
What is the Valency of 2nd group elements?
two electrons
Which element is a metal with Valency one?
Which element is a non metal with a valency of two?
Oxygen
Which element is a metal with valency 3?
Aluminium
What element has 4shells?
Beryllium
Which element is more reactive?
In a reactivity series, the most reactive element is placed at the top and the least reactive element at the bottom….The reactivity series.
| Element | Reaction with water |
|---|---|
| Potassium | Violently |
| Sodium | Very quickly |
| Lithium | Quickly |
| Calcium | More slowly |