Question

X is an element with atomic number 20.
a. Is it a metal or non-metal?
b. What is the valency of X?
c. What type of ion does X form?
(pls answer fast!)

Answer 1

Answer:

1) metal (because has two valence electron which it will donate )

2) 2 is valency

3) as it is metal so cation

Answer 2

Answer:

Calcium

Calcium is a metal.

Valence of calcium is 2+.

It is a positive ion