What is the atomic number of an element whose cation Y+ has the electronic configuration 1s22s22p6?
9
10
11
12
Correct answer is C
No explanation has been provided for this answer.
Sodium
Iron
Calcium
Nitrogen
Correct answer is C
No explanation has been provided for this answer.
The valence electrons in a chloride ion are [17CI]
2p electrons only
3s and 3p electrons only
3p and 3d electrons only
3p electrons only
Correct answer is B
No explanation has been provided for this answer.
Find the number of neutrons in an atom represented by 4521X.
21
24
45
66
Correct answer is B
No explanation has been provided for this answer.
Which of the following practices ensures that a young animal has resistance against diseases?
Regular visits to the veterinary doctors
Giving the animal a maintenance ration
Regular dipping of animal
Giving the animal access to colostrums
Correct answer is D
No explanation has been provided for this answer.
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