Question

An atom of an element X may be written as X94. (a) What does the figure 9 indicate?
(b) What does the figure 4 indicate?
(c) What is the number of protons in atom X?
(d) What is the number of neutrons in atom X?
(e) What is the number of electrons in atom X?
(f) How many electrons are there in the outermost shell of an atom of element X?
(g) Write the symbol of ion formed by an atom of element X.

Answer 1

Answer:

) The figure 9 indicates mass number.

(b) The figure 4 indicates atomic number.

) The number of protons in atom X should be 4.

(d) The number of neutrons in atom X should be 5.

Answer 2

Figure 9 Indicates Mass Number.

Explanation:

Answer a.) The Figure 9 Indicates Mass Number.

Answer b.) Atomic Number is indicated by Figure 4.

Answer c.) Number of Protons in Atom X are 4.

Answer d.) 5 Number of Neutrons are present in Atom X.

Answer e.) 4 Number of electrons are present in Atom X.

Answer f.) 2 electrons are there in the outermost shell of an atom of element X.

Answer g.) $X^2^+$ is the symbol of ion being formed by an atom of element X.