Advertisements
Advertisements
प्रश्न
Elements X, Y and Z have atomic numbers 6, 9 and 12 respectively. Which one:
- Forms an anion
- Forms a cation
- Has four electrons in its valence shell?
Advertisements
उत्तर
The electronic configuration of:
X (6) = 2, 4
Y (9) = 2, 7
Z (12) = 2, 8, 2
- Y forms an anion as it needs just one more electron to complete its octet.
- Z forms a cation. It will lose its 2 electrons to achieve a stable electronic configuration, thus forming a cation.
- An ionic bond is formed between Y and Z and its molecular formula is ZY2.
APPEARS IN
संबंधित प्रश्न
Which of the following are isoelectronic species i.e., those having the same number of electrons?
Na+, K+, Mg2+, Ca2+, S2–, Ar
Fill in the blanks.
Isotopes are the atoms of ______ element having the ______ atomic number but ______ mass number.
The atomic number and the mass number of sodium are 11 and 23 respectively. What information is conveyed by this statement.
From the symbol `""_12^24"Mg"`
, state the mass number, the atomic number and electronic configuration of magnesium.
Draw the orbital diagram of `""_20^40"Ca"^(2+)` ion and state the number of three fundamental particles present in it.
Match the atomic numbers 4,8,10,15 and 19 with the following:
Element which can form trivalent ion
Elements X, Y and Z have atomic numbers 6,9 and 12 respectively. Which one:
- Forms an anion
- Forms a cation
An element ‘A’ has mass number 23 and atomic number 11. State the –
- no. of neutrons in its shell,
- electronic configuration of the element ‘A’.
In a neutral atom number of protons is equal to the number of neutrons.
If element M has mass number 24 and atomic number 12, how many neutrons does its atom contain?
