what is a mouse pointer? when do it change? answer
Answers
Answer:
The mouse pointer moves as the user moves his or her mouse and is used on the display screen as a point of reference to where the mouse is positioned. A basic graphic example of what the mouse cursor would look like is in the image to the right.
Explanation:
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Answer: Group IVA elements have 4 valence electrons in their outermost orbit.
So, group IVA elements can either accept 4 more electrons or give away 4 electrons to complete their octet. Hence when they form ion, they can either have −4 or +4 charge, depending on acceptance of electrons or removal of electrons.
But generally group IVA elements do not form ions. They form compounds mostly by covalent bonding (that is sharing of electrons).
Hence, option A is the correct answer.
Solve any question of Chemical Bonding and Molecular Structure with:-
Explanation: