Question

An atom of element E contains 3 protons, 3 electrons and 4 neutrons (a) What is its atomic number?
(b) What is its mass number?
(c) Write the electronic configuration of the element E.
(d) State whether element E is a metal or non-metal. Why?
(e) What type of ion, cation or anion, will be formed by an atom of element E? Why?
(f) Write the symbol of the ion formed by an atom of element E.
(g) What could element X be?

Answer 1

Answer:

(a) 3

(b) 7

(c) K. L

2. 4

(d) metal

(e) it can be both cation and anion (-4,+4) but most i like +4

(f) +4

Li

(g) Lithium (Li)

Answer 2

Answer:

a) 3

b) 7

c) K , L

2 , 4

d) metal

e) it can be both cation and anion

f) +4

g) Lithium (Li)