Chemistry
What are nucleons? How many nucleons are present in phosphorus? Draw its structure.
Answer
Constituents of the nucleus are called nucleons, i.e. protons and neutrons.
3115P has atomic number 15, hence it has 15 protons.
Mass number 31, hence number of neutrons = 31 - 15 = 16
Therefore, number of nucleons are p + n = 15 + 16 = 31.
Structure of Phosphorus is shown in the diagram below:
Related Questions
Five atoms are labelled A to E.
Atoms Mass no. Atomic no. A 40 20 B 19 9 C 7 3 D 16 8 E 14 7 (a) Which one of these atoms:
(i) contains 7 protons
(ii) has electronic configuration 2, 7?
(b) Write down the formula of the compound formed between C and D.
(c) Predict :
(i) metals
(ii) non-metals.
What are isotopes? With reference to which fundamental particle do isotopes differ ? Give two uses of isotopes.
Why do 3517Cl and 3717Cl have the same chemical properties? In what respect do these atoms differ?