Question

The electronic configurations of three elements
X
,

Y
and
Z
are:
X
=
2

Y
=
2
,

8
,

7

Z
=
2
,

8
,

2

Which of the following is correct regarding these elements?

X
is a metal
Y
is a metal
Z
is a non-metal
Y
is a non-metal and
Z
is a metal​

Answer 1

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